Which among the following salts turns red lit | vedclass

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(A) salt that turns red litmus blue in an aqueous solution must be basic in nature. This occurs due to the hydrolysis of a salt formed from a strong b

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$KCN$

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(A) salt that turns red litmus blue in an aqueous solution must be basic in nature. This occurs due to the hydrolysis of a salt formed from a strong base and a weak acid.$KCN$ is a salt of a strong base $(KOH)$ and a weak acid $(HCN)$.In water,$KCN$ undergoes hydrolysis as follows:$CN^- + H_2O \rightleftharpoons HCN + OH^-$Since $OH^-$ ions are produced,the solution becomes basic,which turns red litmus blue.$NaNO_3$,$NaCl$,and $KCl$ are salts of strong acids and strong bases,resulting in neutral aqueous solutions.

Which among the following salts turns red litmus blue in its aqueous solution?

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