for at a certain temperature is . The pH of a basic buffer containing equimolar concentrations of and will be:

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$pK_b$ for $NH_4OH$ at a certain temperature is $4.74$. The pH of a basic buffer containing equimolar concentrations of $NH_4OH$ and $NH_4Cl$ will be:

Prashant Kotian · Accepted Answer

Correct answer: D. For a basic buffer, . Since the concentrations of salt and base are equimolar, the log term becomes . Thus, . The pH of the solution is .

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