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Question

Consider the reaction
HCN (aq)H+(aq)+CN(aq) , At equilibrium, the addition of CN(aq) would

A
Reduce HCN(aq) concentration
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B
Decrease the H+(aq) ion concentration
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C
Increase the equilibrium constant
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D
Decrease the equilibrium constant
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Solution

The correct option is B Decrease the H+(aq) ion concentration
According to Le-chatelier's principle, At equilibrium, the addition of (CN)would decrease the (H+)ion concentration to produce more and more HCN to nullified the increase of
CN(aq)
.

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