The \( \mathrm{pK} \mathrm{a}_{\mathrm{a}} \) of a weak acid, \( \mathrm{HA} \), is \( 4.80 \). ...

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The \( \mathrm{pK} \mathrm{a}_{\mathrm{a}} \) of a weak acid, \( \mathrm{HA} \), is \( 4.80 \). The \( \mathrm{pK}_{\mathrm{b}} \) of a weak base, \( \mathrm{BOH} \), is \( 4.78 \). The \( \mathrm{pH} \) of an aqueous solution of the correspondng salt, BA, will be
(a) \( 9.58 \)
(b) \( 4.79 \)
(c) \( 7.01 \)
(d) \( 9.22 \)
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