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15-09-2020
Chemistry

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The reagent needed to convert 2-butyne to trans-2-butene is: Question 13 options: A) H2/Lindlar's catalyst B) Na/NH3 C) H2/Pt

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19-09-2020

Answer:

B) Na/NH3

Explanation:

Generally two catalysts are capable of reducing akynes to alkenes. They are H2/Lindlar's catalyst and Na/NH3.

The correct option however is; Na/NH3.

This is because the H2/Lindlar's catalys would reduce the butyne to butene, however it is the cis isomer that is obtained.

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