The pK_a of a weak acid, HA , is 4.80 . The pK_b of a weak base, BOH , is 4.78 . The pH of an aqueous solution of the corresponding salt, BA , will be - Chemistry MCQ AIEEE 2026 | ExamTest.live

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The p K_{a} of a weak acid, HA, is 4.80 . The p K_{b} of a weak base, BOH, is 4.78 . The pH of an aqueous solution of the corresponding salt, BA, will be:

Solution & Step-by-step Explanation

For a salt of a weak acid and a weak base: pH = 7 + \frac{1}{2} (p K_{a} - p K_{b}) pH = 7 + \frac{1}{2} (4.80 - 4.78) = 7 + \frac{1}{2} (0.02) = 7 + 0.01 = 7.01

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The p K_{a} of a weak acid, HA, is 4.80 . The p K_{b} of a weak base, BOH, is 4.78 . The pH of an aqueous solution of the corresponding salt, BA, will be:

9.58

4.79

7.01

9.22

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