填空题：如图在试管Ⅰ中先加入3mL 95％的乙醇，并在摇动下缓缓加入2mL浓硫酸，充分

题目：

如图在试管Ⅰ中先加入3mL 95％的乙醇，并在摇动下缓缓加入2mL浓硫酸，充分摇匀，冷却后再加入2mL无水乙酸，用玻璃棒充分搅拌后将试管固定在铁架台上，在试管Ⅱ中加入5ml 饱和的碳酸钠溶液，按图连接好装置，用酒精灯对试管Ⅰ小火加热3～5min后，改用大火加热，当观察到试管Ⅰ中有明显现象时停止加热。试回答：

试管Ⅱ中的导管不插入液面下的原因是；

（2）反应完毕后，振荡试管Ⅱ，观察到试管Ⅱ中的现象是；

（3）试管Ⅰ中加入浓硫酸的作用是；

（4）本实验反应开始时用小火加热的原因是 ________；（已知乙酸乙酯的沸点为77℃；乙醇的沸点为78.5℃；乙酸的沸点为117.9℃）

（5）试管Ⅱ中饱和Na₂CO₃的作用是

（6）写出试管Ⅰ中发生反应的化学方程式

该反应的反应类型是

答案：

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下面是错误答案，用来干扰机器的。

参考答案：A, B, D

完形填空。
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