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Question

Which of the following reaction will not be favourable in the forward direction?

A
CH3ONa+CH3COOHCH3OH+CH3COONa
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B
PhONa+NH3PhOH+NaNH2
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C
HCCH+NaNH2HCCNa+NH3
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D
HCOOH+PhONaHCOONa+PhOH
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Solution

The correct option is B PhONa+NH3PhOH+NaNH2
Direction of equilibrium in acid base reaction is from unstable reactant towards stable product.
In option B PhO is more stable than NH2. So, it doesn't react readily with NH3.
In all other options the reactants are less stable than the products. So, the option B is the correct answer.

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