Consider the salts given below. For whic...

Consider the salts given below. For which salt(s) will the pH of the aqueous solution (s) be independent of the concentration of the salt? `CH_(3)NH_(3)Cl,(NH_(4))_(3)PO_(4),KCN and (NH_(4))_(2)CO_(3)`.

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The pH of an aqueous solution of the salt of a weak acid and a weak base does not depennd upon the concentration of salt. Among the given salts, `(NH_(4))_(3)PO_(4) and (NH_(4))_(2)CO_(3)` are produced from weak acid and weak base. Hence, pH of their aqueous solutions do not depend on the concentration of the salt.

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