下列除去括号内杂质的有关操作方法不正确的是             

下列除去括号内杂质的有关操作方法不正确的是                              

A.乙烷(乙炔):通过盛溴水的洗气瓶

B.乙酸乙酯(乙醇):加入乙酸和浓硫酸的混合液,然后加热

C.苯(苯酚):加入氢氧化钠溶液,然后分液

D.乙醇(水):加入生石灰,然后蒸馏

答案

       B

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