{"id":978,"date":"2023-07-19T21:02:43","date_gmt":"2023-07-19T21:02:43","guid":{"rendered":"https:\/\/chemuza.org\/ja\/%e4%ba%8c%e3%82%af%e3%83%ad%e3%83%a0%e9%85%b8%e3%82%ab%e3%83%aa%e3%82%a6%e3%83%a0-k2cr2o7\/"},"modified":"2023-07-19T21:02:43","modified_gmt":"2023-07-19T21:02:43","slug":"%e4%ba%8c%e3%82%af%e3%83%ad%e3%83%a0%e9%85%b8%e3%82%ab%e3%83%aa%e3%82%a6%e3%83%a0-k2cr2o7","status":"publish","type":"post","link":"https:\/\/chemuza.org\/ja\/%e4%ba%8c%e3%82%af%e3%83%ad%e3%83%a0%e9%85%b8%e3%82%ab%e3%83%aa%e3%82%a6%e3%83%a0-k2cr2o7\/","title":{"rendered":"\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 \u2013 k2cr2o7\u30017778-50-9"},"content":{"rendered":"<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u306b\u4f7f\u7528\u3055\u308c\u308b\u660e\u308b\u3044\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u5316\u5408\u7269\u3067\u3059\u3002\u3053\u308c\u306f\u5f37\u529b\u306a\u9178\u5316\u5264\u3067\u3042\u308a\u3001\u6442\u53d6\u307e\u305f\u306f\u5438\u5165\u3059\u308b\u3068\u6709\u6bd2\u3068\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td> IUPAC\u540d<\/td>\n<td>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0<\/td>\n<\/tr>\n<tr>\n<td>\u5206\u5b50\u5f0f<\/td>\n<td>K2Cr2O7<\/td>\n<\/tr>\n<tr>\n<td> CAS\u756a\u53f7<\/td>\n<td>7778-50-9<\/td>\n<\/tr>\n<tr>\n<td>\u540c\u7fa9\u8a9e<\/td>\n<td>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3001\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0(VI)\u3001\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea<\/td>\n<\/tr>\n<tr>\n<td>\u30a4\u30f3\u30c1\u30c1<\/td>\n<td>InChI=1S\/2Cr.2K.7O\/q;;2*+1;;;;;;\/h;;2*;7*1-<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2 class=\"wp-block-heading\"><strong>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6027\u8cea<\/strong><\/h2>\n<h3 class=\"wp-block-heading\">\u4e8c\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u914d\u5408<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5316\u5b66\u5f0f\u306f K2Cr2O7 \u3067\u3059\u3002 2 \u3064\u306e\u30ab\u30ea\u30a6\u30e0 (K) \u539f\u5b50\u30012 \u3064\u306e\u30af\u30ed\u30e0 (Cr) \u539f\u5b50\u3001\u304a\u3088\u3073 7 \u3064\u306e\u9178\u7d20 (O) \u539f\u5b50\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u5404\u30ab\u30ea\u30a6\u30e0\u539f\u5b50\u306f +1 \u306e\u96fb\u8377\u3092\u6301\u3061\u3001\u5404\u30af\u30ed\u30e0\u539f\u5b50\u306f +6 \u306e\u96fb\u8377\u3092\u6301\u3061\u307e\u3059\u3002\u5f0f\u4e2d\u306b 2 \u3064\u306e\u30af\u30ed\u30e0\u539f\u5b50\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u306f\u3001\u5316\u5408\u7269\u306e\u4e8c\u91cf\u4f53\u69cb\u9020\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u30e2\u30eb\u8cea\u91cf<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u30e2\u30eb\u8cea\u91cf\u306f\u3001\u69cb\u6210\u5143\u7d20\u306e\u539f\u5b50\u8cea\u91cf\u3092\u52a0\u7b97\u3057\u3066\u8a08\u7b97\u3055\u308c\u307e\u3059\u3002\u30ab\u30ea\u30a6\u30e0\u306e\u30e2\u30eb\u8cea\u91cf\u306f 39.10 \u30b0\u30e9\u30e0\/\u30e2\u30eb (g\/mol)\u3001\u30af\u30ed\u30e0\u306e\u30e2\u30eb\u8cea\u91cf\u306f 52.00 g\/mol\u3001\u9178\u7d20\u306e\u30e2\u30eb\u8cea\u91cf\u306f 16.00 g\/mol \u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u30e2\u30eb\u8cea\u91cf\u306f 294.18 g\/mol \u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6cb8\u70b9<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u6cb8\u70b9\u306b\u9054\u3059\u308b\u524d\u306b\u5206\u89e3\u3059\u308b\u305f\u3081\u3001\u7279\u5b9a\u306e\u6cb8\u70b9\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u52a0\u71b1\u3059\u308b\u3068\u71b1\u5206\u89e3\u304c\u8d77\u3053\u308a\u3001\u9178\u5316\u30af\u30ed\u30e0\u3068\u9178\u7d20\u306e\u6709\u6bd2\u306a\u30d5\u30e5\u30fc\u30e0\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 \u878d\u70b9<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u878d\u70b9\u306f\u3001\u304a\u3088\u305d\u6442\u6c0f 398 \u5ea6 (\u00b0C) \u307e\u305f\u306f\u83ef\u6c0f 748 \u5ea6 (\u00b0F) \u3067\u3059\u3002\u3053\u306e\u6e29\u5ea6\u3067\u306f\u3001\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u56fa\u4f53\u7d50\u6676\u304c\u6db2\u4f53\u72b6\u614b\u306b\u5909\u5316\u3057\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5bc6\u5ea6 g\/mL<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5bc6\u5ea6\u306f\u7d04 2.68 \u30b0\u30e9\u30e0\/\u30df\u30ea\u30ea\u30c3\u30c8\u30eb (g\/mL) \u3067\u3059\u3002\u3053\u308c\u306f\u3001\u7279\u5b9a\u306e\u4f53\u7a4d\u306e\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u304c\u540c\u4f53\u7a4d\u306e\u6c34\u3088\u308a\u3082\u76f8\u5bfe\u7684\u306b\u91cd\u3044\u3053\u3068\u3092\u793a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5206\u5b50\u91cf<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5206\u5b50\u91cf\u306f\u305d\u306e\u30e2\u30eb\u8cea\u91cf\u3068\u540c\u3058\u3067\u30011 \u30e2\u30eb\u3042\u305f\u308a 294.18 \u30b0\u30e9\u30e0 (g\/mol) \u3067\u3059\u3002\u3053\u308c\u306f\u3001\u5316\u5408\u7269\u306e\u5206\u5b50\u5185\u306b\u5b58\u5728\u3059\u308b\u3059\u3079\u3066\u306e\u539f\u5b50\u306e\u5408\u8a08\u8cea\u91cf\u3092\u8868\u3057\u307e\u3059\u3002 <\/p>\n<div class=\"wp-block-image\">\n<figure class=\"alignright size-large\"><img decoding=\"async\" src=\"https:\/\/chemuza.org\/wp-content\/uploads\/2023\/08\/potassium-dichromate.jpg\" alt=\"\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\" srcset=\"\" sizes=\"\"><\/figure>\n<\/div>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u69cb\u9020<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u4e8c\u91cf\u4f53\u69cb\u9020\u3092\u3057\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u9178\u7d20\u539f\u5b50\u306b\u3088\u3063\u3066\u7d50\u5408\u3055\u308c\u305f 2 \u3064\u306e\u30af\u30ed\u30e0\u539f\u5b50\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30ab\u30ea\u30a6\u30e0\u539f\u5b50\u3082\u9178\u7d20\u539f\u5b50\u3068\u7d50\u5408\u3057\u3066\u304a\u308a\u3001\u5316\u5408\u7269\u5185\u306b\u8907\u96d1\u306a\u539f\u5b50\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u304c\u5f62\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\">\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6eb6\u89e3\u5ea6<\/h3>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u6c34\u306b\u975e\u5e38\u306b\u6eb6\u3051\u307e\u3059\u3002\u6c34\u306b\u7c21\u5358\u306b\u6eb6\u3051\u3066\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u6eb6\u6db2\u306b\u306a\u308a\u307e\u3059\u3002\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6eb6\u89e3\u5ea6\u306f\u6e29\u5ea6\u3068\u3068\u3082\u306b\u5897\u52a0\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u6709\u6a5f\u6eb6\u5a92\u3078\u306e\u6eb6\u89e3\u5ea6\u306b\u306f\u9650\u754c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>\u5916\u89b3<\/td>\n<td>\u660e\u308b\u3044\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u7d50\u6676<\/td>\n<\/tr>\n<tr>\n<td>\u6bd4\u91cd<\/td>\n<td>2.68g\/ml<\/td>\n<\/tr>\n<tr>\n<td>\u8272<\/td>\n<td>\u30aa\u30ec\u30f3\u30b8<\/td>\n<\/tr>\n<tr>\n<td>\u5302\u3044<\/td>\n<td>\u7121\u81ed<\/td>\n<\/tr>\n<tr>\n<td>\u30e2\u30eb\u8cea\u91cf<\/td>\n<td>294.18 g\/\u30e2\u30eb<\/td>\n<\/tr>\n<tr>\n<td>\u5bc6\u5ea6<\/td>\n<td>2.68g\/ml<\/td>\n<\/tr>\n<tr>\n<td>\u878d\u5408\u70b9<\/td>\n<td>398\u00b0C (748\u00b0F)<\/td>\n<\/tr>\n<tr>\n<td>\u6cb8\u70b9<\/td>\n<td>\u5206\u89e3\u3055\u308c\u305f<\/td>\n<\/tr>\n<tr>\n<td>\u30d5\u30e9\u30c3\u30b7\u30e5\u30c9\u30c3\u30c8<\/td>\n<td>\u9069\u7528\u3067\u304d\u306a\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u6c34\u3078\u306e\u6eb6\u89e3\u5ea6<\/td>\n<td>\u975e\u5e38\u306b\u6eb6\u3051\u3084\u3059\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u6eb6\u89e3\u6027<\/td>\n<td>\u6c34\u306b\u53ef\u6eb6\u3001\u6709\u6a5f\u6eb6\u5a92\u306b\u306f\u9650\u5b9a\u3055\u308c\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u84b8\u6c17\u5727<\/td>\n<td>\u7121\u8996\u3067\u304d\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u84b8\u6c17\u5bc6\u5ea6<\/td>\n<td>\u5229\u7528\u4e0d\u53ef<\/td>\n<\/tr>\n<tr>\n<td>pKa<\/td>\n<td>\u9069\u7528\u3067\u304d\u306a\u3044<\/td>\n<\/tr>\n<tr>\n<td>pH<\/td>\n<td>\u9178\u6027\uff08pH4\u7a0b\u5ea6\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<h2 class=\"wp-block-heading\"><strong>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5b89\u5168\u6027\u3068\u5371\u967a\u6027<\/strong><\/h2>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u91cd\u5927\u306a\u5b89\u5168\u4e0a\u306e\u30ea\u30b9\u30af\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002\u6442\u53d6\u3001\u5438\u5165\u3001\u307e\u305f\u306f\u76ae\u819a\u3068\u63a5\u89e6\u3059\u308b\u3068\u975e\u5e38\u306b\u6709\u6bd2\u3067\u3059\u3002\u3053\u306e\u5316\u5408\u7269\u306f\u53ef\u71c3\u6027\u7269\u8cea\u3068\u6fc0\u3057\u304f\u53cd\u5fdc\u3057\u3001\u706b\u707d\u306e\u5371\u967a\u6027\u3092\u9ad8\u3081\u308b\u5f37\u529b\u306a\u9178\u5316\u5264\u3067\u3059\u3002\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306b\u3055\u3089\u3055\u308c\u308b\u3068\u3001\u91cd\u7be4\u306a\u76ae\u819a\u306e\u708e\u75c7\u3001\u706b\u50b7\u3001\u30a2\u30ec\u30eb\u30ae\u30fc\u53cd\u5fdc\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u305d\u306e\u7159\u3084\u7c89\u5875\u3092\u5438\u3044\u8fbc\u3080\u3068\u3001\u547c\u5438\u5668\u75be\u60a3\u3084\u80ba\u640d\u50b7\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u9577\u671f\u306b\u308f\u305f\u308b\u66dd\u9732\u306f\u3001\u30af\u30ed\u30e0\u9178\u5869\u8a98\u767a\u6027\u80ba\u304c\u3093\u306a\u3069\u306e\u5065\u5eb7\u3078\u306e\u60aa\u5f71\u97ff\u3068\u95a2\u9023\u3057\u3066\u3044\u307e\u3059\u3002\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u53d6\u308a\u6271\u3044\u306b\u306f\u7d30\u5fc3\u306e\u6ce8\u610f\u3092\u6255\u3044\u3001\u9069\u5207\u306a\u4fdd\u8b77\u5177\u3092\u7740\u7528\u3057\u3001\u5065\u5eb7\u3068\u5b89\u5168\u306e\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u306b\u9069\u5207\u306a\u63db\u6c17\u3092\u78ba\u4fdd\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<figure class=\"wp-block-table\">\n<table>\n<tbody>\n<tr>\n<td>\u30cf\u30b6\u30fc\u30c9\u30b7\u30f3\u30dc\u30eb<\/td>\n<td>\u8150\u98df\u6027\u3001\u5065\u5eb7\u88ab\u5bb3\u3001\u6025\u6027\u6bd2\u6027<\/td>\n<\/tr>\n<tr>\n<td>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8aac\u660e<\/td>\n<td>\u2013 \u975e\u5e38\u306b\u6709\u6bd2 \u2013 \u8150\u98df\u6027 \u2013 \u706b\u50b7\u3092\u5f15\u304d\u8d77\u3053\u3059<\/td>\n<\/tr>\n<tr>\n<td>\u56fd\u9023\u8b58\u5225\u756a\u53f7<\/td>\n<td>UN 3086 (\u30af\u30e9\u30b9 6.1)<\/td>\n<\/tr>\n<tr>\n<td> HS\u30b3\u30fc\u30c9<\/td>\n<td>2841.10.10<\/td>\n<\/tr>\n<tr>\n<td>\u5371\u967a\u7b49\u7d1a<\/td>\n<td>6.1 (\u6709\u6bd2\u7269\u8cea)<\/td>\n<\/tr>\n<tr>\n<td>\u68b1\u5305\u30b0\u30eb\u30fc\u30d7<\/td>\n<td>\u2162<\/td>\n<\/tr>\n<tr>\n<td>\u6bd2\u6027<\/td>\n<td>\u6025\u6027\u7d4c\u53e3\u6bd2\u6027\uff1a\u975e\u5e38\u306b\u6709\u6bd2&lt;br&gt;\u6162\u6027\u6bd2\u6027\uff1a\u767a\u304c\u3093\u6027\u306e\u53ef\u80fd\u6027<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n<p>\u6ce8: \u8868\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u5371\u967a\u8a18\u53f7\u306f\u3001\u4e00\u822c\u306b\u8a8d\u8b58\u3055\u308c\u3066\u3044\u308b\u56fd\u969b\u8a18\u53f7\u3067\u3059\u3002\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u53d6\u308a\u6271\u3044\u3068\u4fdd\u7ba1\u306b\u95a2\u3059\u308b\u5b8c\u5168\u306a\u60c5\u5831\u306b\u3064\u3044\u3066\u306f\u3001\u7279\u5b9a\u306e\u898f\u5236\u3068\u5b89\u5168\u4e0a\u306e\u6307\u793a\u3092\u53c2\u7167\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5408\u6210\u6cd5<\/strong><\/h2>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u5408\u6210\u3059\u308b\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u65b9\u6cd5\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u65b9\u6cd5\u306b\u306f\u3001\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 (K2CrO4) \u3068<a href=\"https:\/\/chemuza.org\/ja\/\u30af\u30ed\u30e0\u9178h2cro4\/\">\u30af\u30ed\u30e0\u9178 (H2CrO4)<\/a>\u306e\u53cd\u5fdc\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u53cd\u5fdc\u306f\u9178\u6027\u74b0\u5883\u3067\u884c\u308f\u308c\u3001\u901a\u5e38\u306f<a href=\"https:\/\/chemuza.org\/ja\/\u786b\u9178\u30d2\u3099\u30c8\u30ea\u30aa\u30fc\u30eb\u6cb9-h2so4\/\">\u786b\u9178 (H2SO4)<\/a>\u304c\u89e6\u5a92\u3068\u3057\u3066\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u53cd\u5fdc\u304c\u305d\u308c\u3092\u8981\u7d04\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p> 2K2CrO4 + 2H2CrO4 + 2H2SO4 \u2192 K2Cr2O7 + Cr2(SO4)3 + 4H2O<\/p>\n<p>\u5225\u306e\u65b9\u6cd5\u306b\u306f<a href=\"https:\/\/chemuza.org\/ja\/\u786b\u9178\u30d2\u3099\u30c8\u30ea\u30aa\u30fc\u30eb\u6cb9-h2so4\/\">\u3001\u6fc3\u786b\u9178 (H2SO4) \u306a\u3069\u306e\u5f37\u529b<\/a>\u306a\u9178\u5316\u5264\u3068\u30a8\u30bf\u30ce\u30fc\u30eb (C2H5OH) \u306a\u3069\u306e\u9084\u5143\u5264\u3092\u4f7f\u7528\u3057\u305f\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u9178\u5316\u304c\u542b\u307e\u308c\u307e\u3059\u3002\u53cd\u5fdc\u304c\u305d\u308c\u3092\u8981\u7d04\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p> 2K2CrO4 + H2SO4 + 3C2H5OH \u2192 K2Cr2O7 + Cr2(SO4)3 + 7H2O + 3CO2<\/p>\n<p><a href=\"https:\/\/chemuza.org\/ja\/\u82db\u6027\u30ab\u30ea\u3001\u6c34\u9178\u5316\u30ab\u30ea\u30a6\u30e0\u3001\u30b3\u30fc\/\">\u6c34\u9178\u5316\u30ab\u30ea\u30a6\u30e0 (KOH) \u306f\u3001<\/a>\u6c34\u6027\u5a92\u4f53\u4e2d\u3067\u4e09\u9178\u5316\u30af\u30ed\u30e0 (CrO3) \u3068\u53cd\u5fdc\u3057\u3066\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u6c34\u6027\u5a92\u4f53\u4e2d\u3067\u53cd\u5fdc\u306f\u8d77\u3053\u308a\u307e\u3059\u3002\u53cd\u5fdc\u304c\u305d\u308c\u3092\u8981\u7d04\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p> 2KOH + CrO3 \u2192 K2Cr2O7 + H2O<\/p>\n<p>\u3053\u308c\u3089\u306e\u5408\u6210\u65b9\u6cd5\u306b\u306f\u3001\u542b\u307e\u308c\u308b\u8a66\u85ac\u306e\u6bd2\u6027\u3068\u8150\u98df\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u9069\u5207\u306a\u5b89\u5168\u4e0a\u306e\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u3053\u308c\u3089\u306e\u53cd\u5fdc\u306f\u63db\u6c17\u306e\u826f\u3044\u5834\u6240\u3067\u884c\u3044\u3001\u4fdd\u8b77\u5177\u3092\u7740\u7528\u3057\u3001\u5316\u5b66\u7269\u8cea\u3092\u614e\u91cd\u306b\u53d6\u308a\u6271\u3046\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002\u3055\u3089\u306b\u3001\u74b0\u5883\u3078\u306e\u5f71\u97ff\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u306b\u306f\u3001\u9069\u5207\u306a\u5ec3\u68c4\u7269\u51e6\u7406\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u5f93\u3046\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u7528\u9014<\/strong><\/h2>\n<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u3001\u305d\u306e\u30e6\u30cb\u30fc\u30af\u306a\u7279\u6027\u306b\u3088\u308a\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u5fdc\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u4e00\u822c\u7684\u306a\u7528\u9014\u306e\u3044\u304f\u3064\u304b\u3092\u6b21\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<ul>\n<li>\u9178\u5316\u5264: \u5316\u5b66\u53cd\u5fdc\u3067\u306f\u3001\u30a2\u30eb\u30b3\u30fc\u30eb\u3092\u30a2\u30eb\u30c7\u30d2\u30c9\u307e\u305f\u306f\u30b1\u30c8\u30f3\u306b\u9178\u5316\u3059\u308b\u5f37\u529b\u306a\u9178\u5316\u5264\u3068\u3057\u3066\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u304c\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u5b9f\u9a13\u7528\u8a66\u85ac: \u5206\u6790\u5316\u5b66\u3067\u306f\u3001\u6709\u6a5f\u5316\u5408\u7269\u306e\u6e2c\u5b9a\u3084\u9178\u5316\u9084\u5143\u53cd\u5fdc\u306e\u5b9f\u884c\u306a\u3069\u306e\u30c6\u30b9\u30c8\u3084\u5b9f\u9a13\u7528\u306e\u8a66\u85ac\u3068\u3057\u3066\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u306a\u3081\u3057\u7523\u696d: \u76ae\u9769\u7523\u696d\u3067\u306f\u3001\u52d5\u7269\u306e\u76ae\u3092\u51e6\u7406\u3057\u3066\u8010\u4e45\u6027\u306e\u3042\u308b\u9769\u88fd\u54c1\u306b\u5909\u3048\u308b\u305f\u3081\u306e\u306a\u3081\u3057\u5264\u3068\u3057\u3066\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u5199\u771f: \u767d\u9ed2\u5199\u771f\u3067\u306f\u73fe\u50cf\u6db2\u306b\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u304a\u308a\u3001\u305d\u308c\u3092\u4f7f\u7528\u3057\u3066\u4e73\u5264\u3092\u5897\u611f\u3057\u3066\u7279\u5b9a\u306e\u5199\u771f\u52b9\u679c\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/li>\n<li>\u6728\u6750\u306e\u4fdd\u5b58: \u6728\u6750\u3092\u8150\u6557\u3001\u83cc\u985e\u3001\u6606\u866b\u306e\u653b\u6483\u304b\u3089\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u3001\u6728\u6750\u4fdd\u5b58\u696d\u754c\u3067\u306f\u6bd2\u6027\u306e\u9ad8\u3044\u6728\u6750\u4fdd\u5b58\u6599\u3068\u3057\u3066\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<li>\u9854\u6599\u306e\u88fd\u9020: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u3001\u696d\u754c\u3067\u5857\u6599\u3001\u30a4\u30f3\u30af\u3001\u67d3\u6599\u306b\u4f7f\u7528\u3055\u308c\u308b\u30af\u30ed\u30e0\u30a4\u30a8\u30ed\u30fc\u3084\u30af\u30ed\u30e0\u30aa\u30ec\u30f3\u30b8\u306a\u3069\u306e\u9854\u6599\u306e\u88fd\u9020\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/li>\n<li>\u96fb\u6c17\u3081\u3063\u304d: \u96fb\u6c17\u3081\u3063\u304d\u30d7\u30ed\u30bb\u30b9\u3067\u306f\u3001\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u4f7f\u7528\u3057\u3066\u3001\u4e9c\u925b\u3001\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u3001\u771f\u936e\u306a\u3069\u306e\u91d1\u5c5e\u306b\u88c5\u98fe\u7684\u306a\u8010\u98df\u6027\u306e\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u3092\u65bd\u3057\u307e\u3059\u3002<\/li>\n<li>\u706b\u5de5\u54c1: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u706b\u5de5\u54c1\u306e\u6df7\u5408\u7269\u306b\u304a\u3044\u3066\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u82b1\u706b\u3084\u30d5\u30ec\u30a2\u306b\u660e\u308b\u3044\u30aa\u30ec\u30f3\u30b8\u8272\u3092\u4e0e\u3048\u307e\u3059\u3002<\/li>\n<li>\u7e4a\u7dad\u7523\u696d: \u7e4a\u7dad\u306e\u67d3\u8272\u3068\u5370\u5237\u306b\u306f\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u304a\u308a\u3001\u76ee\u7684\u306e\u8272\u3092\u5b9f\u73fe\u3057\u3001\u8272\u5805\u7262\u5ea6\u3092\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/li>\n<li>\u5b9f\u9a13\u7528\u30ac\u30e9\u30b9\u5668\u5177\u306e\u6821\u6b63: \u6b63\u78ba\u306a\u4f53\u7a4d\u6e2c\u5b9a\u306e\u305f\u3081\u306b\u3001\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u6eb6\u6db2\u3092\u4f7f\u7528\u3057\u3066\u5b9f\u9a13\u7528\u30ac\u30e9\u30b9\u5668\u5177\u3092\u6821\u6b63\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<p>\u3053\u308c\u3089\u306e\u591a\u69d8\u306a\u7528\u9014\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7523\u696d\u3084\u79d1\u5b66\u7684\u53d6\u308a\u7d44\u307f\u306b\u304a\u3051\u308b\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u591a\u7528\u9014\u6027\u3068\u91cd\u8981\u6027\u3092\u6d6e\u304d\u5f6b\u308a\u306b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2 class=\"wp-block-heading\"><strong>\u8cea\u554f:<\/strong><\/h2>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6b63\u3057\u3044\u5f0f\u306f\u4f55\u3067\u3059\u304b?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6b63\u3057\u3044\u5f0f\u306f K2Cr2O7 \u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3068\u306f\u4f55\u3067\u3059\u304b?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u660e\u308b\u3044\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u5316\u5408\u7269\u3067\u3001\u9178\u5316\u5264\u3068\u3057\u3066\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u4e8c\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u30a4\u30aa\u30f3\u6027\u3067\u3059\u304b\u3001\u305d\u308c\u3068\u3082\u5171\u6709\u7d50\u5408\u6027\u3067\u3059\u304b?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u30a4\u30aa\u30f3\u6027\u5316\u5408\u7269\u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: 3 \u30e2\u30eb\u306e\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u6eb6\u89e3\u3059\u308b\u306e\u306b\u5fc5\u8981\u306a\u6c34\u306e\u6700\u5c0f\u91cf\u306f\u3069\u308c\u304f\u3089\u3044\u3067\u3059\u304b?<\/h3>\n<p> A: 3 \u30e2\u30eb\u306e\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u6eb6\u89e3\u3059\u308b\u306e\u306b\u5fc5\u8981\u306a\u6c34\u306e\u6700\u5c0f\u91cf\u306f\u7d04 564 \u30b0\u30e9\u30e0\u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u30e2\u30eb\u8cea\u91cf\u306f\u3069\u308c\u304f\u3089\u3044\u3067\u3059\u304b?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u30e2\u30eb\u8cea\u91cf\u306f 294.18 \u30b0\u30e9\u30e0\/\u30e2\u30eb (g\/mol) \u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e MSDS \u306f?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u88fd\u54c1\u5b89\u5168\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8 (MSDS) \u306b\u306f\u3001\u305d\u306e\u5371\u967a\u6027\u3001\u53d6\u308a\u6271\u3044\u3001\u4fdd\u7ba1\u3001\u5fdc\u6025\u63aa\u7f6e\u306b\u95a2\u3059\u308b\u8a73\u7d30\u306a\u60c5\u5831\u304c\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u7279\u5b9a\u306e MSDS \u306b\u3064\u3044\u3066\u306f\u3001\u4fe1\u983c\u3067\u304d\u308b\u60c5\u5831\u6e90\u307e\u305f\u306f\u88fd\u9020\u5143\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u30af\u30ed\u30e0\u9271\u77f3\u304b\u3089\u3069\u306e\u3088\u3046\u306b\u8abf\u88fd\u3055\u308c\u307e\u3059\u304b?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u3001\u30af\u30ed\u30e0\u9271\u77f3\u3092\u6c34\u9178\u5316\u30ab\u30ea\u30a6\u30e0\u307e\u305f\u306f\u70ad\u9178\u30ab\u30ea\u30a6\u30e0\u3067\u7119\u713c\u3057\u3001\u751f\u6210\u7269\u3092\u5358\u96e2\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u8abf\u88fd\u3067\u304d\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u4f55\u30b0\u30e9\u30e0\u306e\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u30e1\u30b9\u30d5\u30e9\u30b9\u30b3\u306b\u52a0\u3048\u307e\u3057\u305f\u304b?<\/h3>\n<p> A: \u30e1\u30b9\u30d5\u30e9\u30b9\u30b3\u306b\u52a0\u3048\u308b\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u6b63\u78ba\u306a\u30b0\u30e9\u30e0\u6570\u306f\u3001\u6eb6\u6db2\u306e\u76ee\u7684\u306e\u6fc3\u5ea6\u3068\u4f53\u7a4d\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u9178\u6027\u5316\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u3092\u4f7f\u7528\u3057\u305f\u5834\u5408\u3001\u30d7\u30ed\u30d1\u30ca\u30fc\u30eb\u3068\u30d7\u30ed\u30d1\u30ce\u30f3\u3092\u3069\u306e\u3088\u3046\u306b\u533a\u5225\u3057\u307e\u3059\u304b?<\/h3>\n<p> A: \u30d7\u30ed\u30d1\u30ca\u30fc\u30eb\u306f\u9178\u6027\u5316\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306b\u3088\u3063\u3066\u30d7\u30ed\u30d1\u30f3\u9178\u306b\u9178\u5316\u3055\u308c\u307e\u3059\u304c\u3001\u30d7\u30ed\u30d1\u30ce\u30f3 (\u30a2\u30bb\u30c8\u30f3) \u306f\u53cd\u5fdc\u3092\u793a\u3057\u307e\u305b\u3093\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u9084\u5143\u5264\u3067\u3059\u304b?<\/h3>\n<p> A: \u3044\u3044\u3048\u3001\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u9178\u5316\u5264\u3067\u3059\u3002<\/p>\n<h3 class=\"wp-block-heading\"> Q: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5f0f\u306f\u3069\u306e\u3088\u3046\u306b\u66f8\u304f\u306e\u3067\u3059\u304b?<\/h3>\n<p> A: \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306e\u5316\u5b66\u5f0f\u306f K2Cr2O7 \u3067\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u306b\u4f7f\u7528\u3055\u308c\u308b\u660e\u308b\u3044\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u5316\u5408\u7269\u3067\u3059\u3002\u3053\u308c\u306f\u5f37\u529b\u306a\u9178\u5316\u5264\u3067\u3042\u308a\u3001\u6442\u53d6\u307e &#8230; <a title=\"\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 \u2013 k2cr2o7\u30017778-50-9\" class=\"read-more\" href=\"https:\/\/chemuza.org\/ja\/%e4%ba%8c%e3%82%af%e3%83%ad%e3%83%a0%e9%85%b8%e3%82%ab%e3%83%aa%e3%82%a6%e3%83%a0-k2cr2o7\/\" aria-label=\"More on \u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 \u2013 k2cr2o7\u30017778-50-9\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 - K2Cr2O7\u30017778-50-9<\/title>\n<meta name=\"description\" content=\"\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u7528\u9014\u306b\u4f7f\u7528\u3055\u308c\u308b\u660e\u308b\u3044\u30aa\u30ec\u30f3\u30b8\u8272\u306e\u5316\u5408\u7269\u3067\u3059\u3002\u5f37\u529b\u306a\u9178\u5316\u5264\u3067\u3059\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/chemuza.org\/ja\/%e4%ba%8c%e3%82%af%e3%83%ad%e3%83%a0%e9%85%b8%e3%82%ab%e3%83%aa%e3%82%a6%e3%83%a0-k2cr2o7\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/chemuza.org\/ja\/%e4%ba%8c%e3%82%af%e3%83%ad%e3%83%a0%e9%85%b8%e3%82%ab%e3%83%aa%e3%82%a6%e3%83%a0-k2cr2o7\/\"},\"author\":{\"name\":\"\u7de8\u96c6\u30c1\u30fc\u30e0\",\"@id\":\"https:\/\/chemuza.org\/ja\/#\/schema\/person\/b5ce900ac8d08a9696871398668a8369\"},\"headline\":\"\u91cd\u30af\u30ed\u30e0\u9178\u30ab\u30ea\u30a6\u30e0 \u2013 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