Problem

Problem

A buffer solution can be prepared by adding which of the following to 50 cm350 \text{ cm}^3 of 0.10 mol dm−3 CH3COOH(aq)0.10 \text{ mol dm}^{-3} \text{ CH}_3\text{COOH}(\text{aq}) ? - I. 50 cm350 \text{ cm}^3 of 0.10 mol dm−3 NaCH3COO(aq)0.10 \text{ mol dm}^{-3} \text{ NaCH}_3\text{COO}(\text{aq}) - II. 25 cm325 \text{ cm}^3 of 0.10 mol dm−3 NaOH(aq)0.10 \text{ mol dm}^{-3} \text{ NaOH}(\text{aq}) - III. 50 cm350 \text{ cm}^3 of 0.10 mol dm−3 NaOH(aq)0.10 \text{ mol dm}^{-3} \text{ NaOH}(\text{aq}) a. I only b. I and II only c. II and III only d. I, II and III

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