In which of the following will the dissociati | vedclass

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(C) $NH_4OH$ is a weak base that dissociates as $NH_4OH \rightleftharpoons NH_4^+ + OH^-$. According to the common ion effect,the addition of a strong

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$NH_4Cl$

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(C) $NH_4OH$ is a weak base that dissociates as $NH_4OH \rightleftharpoons NH_4^+ + OH^-$. According to the common ion effect,the addition of a strong electrolyte containing a common ion ($NH_4^+$ or $OH^-$) suppresses the dissociation of the weak electrolyte. $NH_4Cl$ is a strong electrolyte that provides $NH_4^+$ ions in the solution. Therefore,the presence of $NH_4Cl$ increases the concentration of $NH_4^+$ ions,which shifts the equilibrium to the left,thereby minimizing the dissociation of $NH_4OH$.

In which of the following will the dissociation of $NH_4OH$ be minimum?

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