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How many reagents from the list below wo...

How many reagents from the list below would give effervescence when reacted with 1-Pentyne?
`NaOH(I), CH_3CH_2ONa(II), CH_3CH_2MgBr(III), NaH(IV) , NaNH_2(V), Na(VI), NaHCO_3(VII),[(CH_3)_2CH]_2 Nli(VII), CH_3CH_2Li(IX),C_6H_5Li(X)`

Text Solution

Verified by Experts

The correct Answer is:
5
`CH_3CH_2MgBr (III) ` give ethane gas . NaH (IV), Na(VI), gives `H_2` gas . `NaNH_2(V)` gives `NH_3` gas . `CH_3CH_2Li(IX)`
Gives ethane gas . `[(CH_3)_2CH]_2NLi and C_6H_5Li` also forms salts but the products `[(CH_3)_2 CH]_2NH and C_6H_6` are liquid at room temperature , no effervescence are observed.
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