Calculate the pH of a buffer solution containing 0.35 M weak acid and 0.70 M of its salt with strong base if $\mathrm{pK}_{\mathrm{a}}$ is 4.56 .

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Aicharya · Accepted Answer

For an acidic buffer, $\begin{aligned} \mathrm{pH} & =\mathrm{pK}_{\mathrm{a}}+\log _{10} \frac{[	ext { salt }]}{[	ext { acid }]} \ 	herefore \quad \mathrm{pH} & =4.56+\log _{10} \frac{0.70}{0.35} \ & =4.56+\log _{10} 2=4.56+0.3010 \ & =4.861 \end{aligned}$

Calculate the pH of a buffer solution containing 0.35 M weak acid and 0.70 M of its salt with strong base if…

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