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Solving for Molar Ratios

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Question: You are asked to go into the lab and prepare an ethanoic acid - sodium ethanoate buffer solution with a pH of 4.00 ± 0.02. What molar ratio of [CH3COOH] / [ CH3COONa] should be used?

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A worked-out response is provided for the calculation required and all the necessary equations and values needed for solving are also given. This provides a basic model which can be used for solving future problems of this nature.

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