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The aqueous solution of which of the following salt will have the lowest pH

The aqueous solution of which of the following salt will have the lowest pH

Options

(a) NaClO₃
(b) NaClO
(c) NaClO₄
(d) NaClO₂

Correct Answer:

NaClO₄

Explanation:

NaClO₄, on hydrolysis, gives strongest acid HClO₄ as compared to other salts. this is strongly ionized and gives highest concentration of H⁺. therefore aqueous solution of NaClO₄ will have lowest pH value.

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