Addition of 2 mol of HCl to 1-butyne would yield:

Name: Addition of 2 mol of HCl to 1-butyne would yield:
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Addition of 2 mol of HCl to 1-butyne would yield 1,1,2,2-tetrachlorobutane, which is represented by choice B. The addition of HCl to the triple bond results in two chlorides being added to each of the C atoms involved in the triple bond, and the product has four chlorides in total. The other choices do not correctly represent the product of this reaction.

Addition of 2 Mol of HCl to 1-Butyne Would Yield