下列关于乙烯和乙烷相比较的说法正确的是( )。 A.乙烯燃烧比乙烷

下列关于乙烯和乙烷相比较的说法正确的是(  )

A.乙烯燃烧比乙烷火焰明亮并伴有黑烟,可用此法对二者进行鉴别

B.乙烯均能使溴的四氯化碳溶液和酸性的KMnO4溶液退色,且二者退色的原理相同

C.可将乙烷与乙烯通过酸性KMnO4溶液,鉴别乙烷与乙烯并除去乙烷中乙烯

D.乙烯和乙烷均可与氯气反应制取纯净的氯乙烷

答案

A

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