Question

Identify A and B and in the following reaction
2 CH3 - CH2 - CH-CL - CH3 + 2KOH (Alviholic ) boily A+ B + 2H2O + 2 kcL
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Answer 1

Explanation:

Reaction of the process: CH3−CH2Cl+KOH→CH2=CH2+KCl+H2O

In this process alc. KOH is used for dehydrohalogenation.

Then in presence of Bromine gas

CH2=CH2Br2CH2Br−CH2Br 

And in presence of Zn it will form ethene again.

CH2Br−CH2Br+Zn→CH2=CH2+ZnBr2