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When but-2-yne is treated with Na in liq...

When but-2-yne is treated with Na in liquid ammonia

A

cis-2-butene is obtained

B

trans-2-butene is formed

C

n-butane is the major product

D

it rearranges to but-1-yne

Text Solution

Verified by Experts

The correct Answer is:
B
When but-2-yne is treated with Na in liquid ammonia, addition of two H-atoms takes plance at the triple bonded carbon atoms in trans manner.
`{:(CH _(3) C -= C CH_(3) overset( Na)underset(Liq. NH _(3)) to CH _(3) - overset(H) overset( |) (C) = underset(H) underset(|) (C) - CH _(3)), ( " ""Trans-2-butene"):}`
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