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A Popular Buffer Solution Consists of Carbonate (CO32−) and Hydrogen

Question 56

Multiple Choice

A popular buffer solution consists of carbonate (CO32−) and hydrogen carbonate (HCO3−) conjugate acid-base pair. Which, if any, of the following such buffers has the highest buffer capacity?


A) 0.9 M CO 3 2− and 0.1 M HCO 3 −
B) 0.1 M CO 3 2− and 0.9 M HCO 3 −
C) 0.5 M CO 3 2− and 0.5 M HCO 3 −
D) 0.1 M CO 3 2− and 0.1 M HCO 3 −
E) They all have the same buffer capacity.

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