Which of the following salts contains an anio | vedclass

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(A) Salt hydrolysis is the reaction of an ion with water to change the $pH$ of the solution.$NaCN$ is a salt of a strong base $(NaOH)$ and a weak acid

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$NaCN$

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(A) Salt hydrolysis is the reaction of an ion with water to change the $pH$ of the solution.$NaCN$ is a salt of a strong base $(NaOH)$ and a weak acid $(HCN)$. The anion $CN^-$ undergoes hydrolysis: $CN^- + H_2O \rightleftharpoons HCN + OH^-$.$NH_4Cl$ is a salt of a weak base $(NH_4OH)$ and a strong acid $(HCl)$. The cation $NH_4^+$ undergoes hydrolysis: $NH_4^+ + H_2O \rightleftharpoons NH_4OH + H^+$.$CuSO_4$ and $FeCl_3$ are salts of weak bases and strong acids,where the metal cations undergo hydrolysis.Therefore,$NaCN$ is the salt containing an anion that undergoes hydrolysis.

Which of the following salts contains an anion that undergoes hydrolysis?

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