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

question 114

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 CO ₃ ²⁻ and 0.1 M HCO ₃ ⁻
• B)1 L of 0.1 M CO ₃ ²⁻ and 0.9 M HCO ₃ ⁻
• C)1 L of 0.5 M CO ₃ ²⁻ and 0.5 M HCO ₃ ⁻
• 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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