If the pK a of a weak acid HA is 4 .80 and the pK b of a weak base BOH is 4 .78 . Then, the pH of an aqueous solution of the corresponding salt, BA will be

Question

If the pK a of a weak acid HA is 4 .80 and the pK b of a weak base BOH is 4 .78 . Then, the pH of an aqueous solution of the corresponding salt, BA will be, 8.23, 9.41, 7.01, 5.91

MARKS App · Accepted Answer

BOH + HA → B + + A − + H 2 O pH = 1 2 pK w + 1 2 pK a − 1 2 pK b = 1 2 14 + 4.80 − 4.78 = 7.01

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