Which of the following salts will undergo hydrolysis and result in a solution with a pH < 7?
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NH₄Cl
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Na₂CO₃
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KCl
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CH₃COONa
📝 Detailed explanation
NH₄Cl is a salt of a weak base (NH₃) and a strong acid (HCl).
The NH₄⁺ ion hydrolyzes to produce H⁺ ions, making the solution acidic.
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