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(A) The $pH$ of an aqueous solution of a salt depends on the strength of the parent acid. The salt $NaClO$ is derived from the weak acid $HClO$. The s

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$NaClO$

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(A) The $pH$ of an aqueous solution of a salt depends on the strength of the parent acid. The salt $NaClO$ is derived from the weak acid $HClO$. The salts $NaClO_2$,$NaClO_3$,and $NaClO_4$ are derived from $HClO_2$,$HClO_3$,and $HClO_4$ respectively. As the oxidation state of chlorine increases,the acidic strength of the corresponding oxoacid increases $(HClO Since $HClO$ is the weakest acid among these,its conjugate base $ClO^-$ is the strongest base. $A$ stronger conjugate base undergoes greater hydrolysis to produce more $OH^-$ ions,resulting in a higher $pH$. Therefore,$NaClO$ will have the highest $pH$.

Which of the following aqueous solutions will have the highest $pH$?

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