Most thesis proposals usually include the following elements:_____________, _____________,_____________,_____________,_____________,_____________ ,_____________, and _____________,
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【单选题】卤代烷与 NaOH 在水-乙醇溶液中进行反应,针对下列现象给出的正确 判断 是: (1) 产物发生 Walden 转化; S N 2 (2) 增加溶剂的含水量反应明显加快; S N 1 (3) 有重排反应; S N 1 (4) 叔卤代烷反应速率大于仲卤代烷; S N 1 (5) 反应只有一步。 S N 2
【简答题】One winter term during college, I took a history class to fulfill a requirement. The professor was a 1 fellow with red hair. He would walk shyly into the room wearing his hooded (带帽的) winter coat, onc...
【多选题】卤代烷与 NaOH 在水-乙醇溶液中进行反应,针对下列现象给出的正确 判断 是: (1) 产物发生 Walden 转化; S N 2 (2) 增加溶剂的含水量反应明显加快; S N 1 (3) 有重排反应; S N 1 (4) 叔卤代烷反应速率大于仲卤代烷; S N 1 (5) 反应只有一步。 S N 2