According to general thermodynamic principles, the solubility of an exothermic dissolution process should decrease with an increase in temperature. Which of the following solid substances is a notable

Question

According to general thermodynamic principles, the solubility of an exothermic dissolution process should decrease with an increase in temperature. Which of the following solid substances is a notable exception to this rule, where its solubility increases with temperature despite the dissolution being an exothermic process?

Prashant Kotian · Accepted Answer

Correct answer: B. The dissolution of in water is highly exothermic (). However, experimentally, its solubility increases with an increase in temperature, which is a standard exception often tested in equilibrium phase shifts.

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