Which of the following salts turns red litmus | vedclass

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(C) salt turns red litmus blue if its aqueous solution is basic.$NH_4NO_3$ is a salt of a strong acid $(HNO_3)$ and a weak base $(NH_4OH)$,making it a

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$NH_4CN$

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(C) salt turns red litmus blue if its aqueous solution is basic.$NH_4NO_3$ is a salt of a strong acid $(HNO_3)$ and a weak base $(NH_4OH)$,making it acidic.$NH_4Cl$ is a salt of a strong acid $(HCl)$ and a weak base $(NH_4OH)$,making it acidic.$NH_4F$ is a salt of a weak acid $(HF)$ and a weak base $(NH_4OH)$. Since $K_a$ of $HF$ $(6.8 	imes 10^{-4})$ is greater than $K_b$ of $NH_4OH$ $(1.8 	imes 10^{-5})$,the solution is acidic.$NH_4CN$ is a salt of a weak acid $HCN$ $(K_a = 4.0 	imes 10^{-10})$ and a weak base $NH_4OH$ $(K_b = 1.8 	imes 10^{-5})$.Since $K_b > K_a$,the aqueous solution of $NH_4CN$ is basic and turns red litmus blue.

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

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