实验室购买的无水乙醇,苯甲醛等试剂,在具体合成实验过程中为何还要重新蒸馏？ 北京理工大学化学类专业怎么样
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绛旓細1.灏5.3ml锛0.05mol锛夋柊钂搁鐨鑻敳閱涳紝1.8ml锛0.025mol锛変笝閰紝40ml95%涔欓唶鍜50ml10%NaOH渚濇鍔犲叆灏忕儳鏉腑銆2.鐢电鎼呮媽20min銆3.娲楁钉鎶藉共姘村垎銆4.鐢1ml鍐伴唻閰稿拰25ml95%涔欓唶閰嶆垚娣峰悎娑叉蹈娉℃礂娑わ紝鏈鍚庣敤姘存礂娑や竴娆°5.灏嗗浐浣撶Щ鍒100ml涓夎鐑х摱涓紝鐢鏃犳按涔欓唶杩涜閲嶇粨鏅讹紝鐢ㄥ啺姘村喎鍒00C銆6....
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绛旓細47 閭鑻浜岀敳閰告阿閽 鍩哄噯 100g/鐡 1 48 鏃犳按纰抽吀閽 鍩哄噯 100g/鐡 1 49 姘寲閽 鍩哄噯 100g/鐡 1 50 纰抽吀閽 鍩哄噯 100g/鐡 1 51 鍙憾鎬ф穩绮 AR 500g/鐡 1 52 鏃犳按涔欓唶 AR 500ml/鐡 5 53 涔欎簩閱 AR 500ml/鐡 1 54 涓欎笁閱 AR 500ml/鐡 1 55 鍐颁箼閰 AR 500ml/鐡 2 56 涔欓吀婧舵恫 ...
绛旓細涓枃鍚 鑻敳閱 鍒 鍚 鑻啗 鍒嗗瓙閲 106.12 鍒О 瀹夋伅棣欓啗銆佽嫰閱涖佷汉閫犺嫤鏉忎粊娌 澶栬 绾搧涓烘棤鑹叉恫浣擄紝宸ヤ笟鍝佷负鏃犺壊鑷虫贰榛勮壊娑蹭綋锛屾湁鑻︽潖浠佹皵鍛 澶栨枃鍚 benzaldehyde 鍒嗗瓙寮 C7H6O 鍖栧寮 C6H5CHO 瀹為獙瀹涓壌鍒敳閱涘拰鑻敳閱涳細鍔犲叆鏂愭灄璇曞墏锛圕u(OH)2纰辨ф偓娴婃恫锛夊姞鐑紝...
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