One litre of a buffer solution containing 0.01 M and 0.1 M having pKb of 5 has pH of

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Question

One litre of a buffer solution containing 0.01 M $NH_4Cl$ and 0.1 M $NH_4OH$ having pKb of 5 has pH of

Prashant Kotian · Accepted Answer

Correct answer: B. We know that, ammonium hydroxide and ammonium chloride is a basic buffer. So, to calculate its pH we have- b pOH pK log[salt]/[base] pOH 5 log0.1 pOH 4 and,pH 14 4 10

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