According to Le-Chatelier's principle and general thermodynamics, the solubility of an exothermic di — Chemical Equilibrium Chemistry Question
Question
According to Le-Chatelier's principle and general thermodynamics, the solubility of an exothermic dissolution process decreases with an increase in temperature. Which of the following solid substances is a notable exception to this rule?
Answer: B
💡 Solution & Explanation
The dissolution of $NaOH$ in water is highly exothermic ($\Delta H < 0$). However, experimentally, its solubility increases with an increase in temperature, which is a standard exception in physical equilibrium.
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