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If dissolution of a solid in a liquid is endothermic (Δ_sol H > 0), the solubility will:
ARemain unchanged with temperature
BFirst increase, then decrease
CIncrease with rise in temperature
DDecrease with rise in temperature
Answer & Solution
Correct answer: C. Increase with rise in temperature
By Le Chatelier: heating an endothermic equilibrium shifts it forward → **solubility increases** with T. (Exothermic dissolution → solubility decreases with T.)
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