选择适当方法鉴别下列物质。 物质选用的试剂依据的现象有关的化

选择适当方法鉴别下列物质。

物质

选用的试剂

依据的现象

有关的化学方程式

CH4C2H4

乙醇和苯

--------------------------

答案

选用的试剂

鉴别依据的现象

有关的化学方程式

KMnO4溶液

Br2CCl4溶液

褪色  为乙烯

没有变化的是甲烷

分层的是苯

不分层的是乙醇

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