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    Question

    Analyze these statements about a buffer solution:

    (I) A buffer solution stabilizes pH levels when small amounts of acids or bases are introduced.

    (II) The pH of a neutral salt solution is consistently 7.

    (III) Acetic acid (CH₃COOH) is categorized as a strong acid, completely dissociating in water.

    A (I) only Correct Answer Incorrect Answer
    B (I) and (II) only Correct Answer Incorrect Answer
    C (I) and (III) only Correct Answer Incorrect Answer
    D (II) only Correct Answer Incorrect Answer

    Solution

    Only statement (I) is correct; a buffer solution indeed stabilizes pH against minor additions of acid or base. Statement (II) is incorrect as the pH of a salt solution can vary based on the acid and base from which it is derived. Statement (III) is also incorrect, as acetic acid is a weak acid that does not fully dissociate in water.

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