已知在水溶液中存在平衡  ,当   与CH3CH2OH酯化时,不可能生成的

已知在水溶液中存在平衡  ,当   与CH3CH2OH酯化时,不可能生成的是(    )

答案

解析: 根据酯化反应脱水规律,酸脱掉-OH,醇脱去H,反应为:

    所以A不可能。

答案: A

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