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Q. chooses the statement that best describes a buffer.

1. A buffer resists change in pH by accepting hydrogen ions when acids are added to the solution and donating hydrogen ions as bases are added.

2. Buffered solutions are always neutral, with a pH of 7.

3. A buffer stabilizes the pH of a solution by preventing acids or bases from dissociating.

4. A buffer causes acidic solutions to become alkaline, and alkaline solutions to become acidic.

5. A buffer prevents pH of a solution from changing while an acid or base is added.

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