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

question 33

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 can neutralize the greatest amount of added hydrochloric acid, while remaining within its buffer range?

• A) 1 L of 0.9 M CO₃²¯ and 0.1 M HCO₃¯
• B) 1 L of 0.1 M CO₃²¯ and 0.9 M HCO₃¯
• C) 1 L of 0.5 M CO₃²¯ and 0.5 M HCO₃¯
• D) 1 L of 0.1 M CO₃²¯ and 0.1 M HCO₃¯
• E) They can all neutralize the same amount of hydrochloric acid.

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