Which salt will produce a solution with a pH greater than 7 when dissolved in water?
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AlCl₃
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(NH₄)₂SO₄
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K₂CO₃
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NaNO₃
📝 Detailed explanation
K₂CO₃ is a salt of a strong base (KOH) and a weak acid (H₂CO₃). The carbonate ion (CO₃²⁻) undergoes basic hydrolysis to produce OH⁻ ions.
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