How can you prepare ethane and ethene from bromoethane?
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CCl4)-----> CH2Br-CH2Br +KOH(alc)-----> CH2=CHBr by chloroform reaction
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It is usually prepared by the addition of HBr to ethene: H2C=CH2 + HBr → H3C-CH2Br. Bromoethane is inexpensive and would rarely be prepared in the laboratory. A laboratory synthesis includes reacting ethanol with a mixture of hydrobromic and sulfuric acids.
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