A student plans to prepare 1.00 L of solution by mixing one of the following pairs of…

CHEMISTRY · Single correct · A Level · Chemistry · Acids and bases · Acids and bases

Problem

A student plans to prepare 1.00 L of solution by mixing one of the following pairs of reagents. In which case will the final solution function as a buffer? (a) 0.10 mol CH3COOH and 0.10 mol NaOH0.10\,\text{mol }\mathrm{CH_3COOH}\text{ and }0.10\,\text{mol }\mathrm{NaOH} (b) 0.05 mol CH3COOH and 0.10 mol NaOH0.05\,\text{mol }\mathrm{CH_3COOH}\text{ and }0.10\,\text{mol }\mathrm{NaOH} (c) 0.10 mol CH3COOH and 0.05 mol NaOH0.10\,\text{mol }\mathrm{CH_3COOH}\text{ and }0.05\,\text{mol }\mathrm{NaOH} (d) 0.10 mol NH3 and 0.20 mol HCl0.10\,\text{mol }\mathrm{NH_3}\text{ and }0.20\,\text{mol }\mathrm{HCl}

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