If a Small Amount of a Strong Base Is Added

question 166

Multiple Choice

If a small amount of a strong base is added to buffer made up of a weak acid, HA,And the sodium salt of its conjugate base,NaA,The pH of the buffer solution does not change appreciably because

• A) the K_a of HA is changed.
• B) No reaction occurs.
• C) the strong base reacts with A^- to give HA, which is a weak acid.
• D) the strong base reacts with HA to give AOH and H⁺.
• E) the strong base reacts with HA to give A^-, which is a weak base.

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