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Aqueous solution of acetic acid contains:

1. CH3COO⁻ and H⁺
2. CH3COO⁻, H⁺O⁺ and CH3COOH
3. CH3COO⁻, H⁺O⁺ and H⁺
4. CH3COOH, CH3COO⁻ and H⁺

Correct answer: CH3COOH, CH3COO⁻ and H⁺

Solution

In an aqueous solution of acetic acid, partial ionization occurs, producing CH3COO⁻ and H⁺ ions, while some acetic acid molecules remain undissociated.

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