If dissolution of a solid absorbs heat, how will its solubility generally change on increasing temperature?
Answer and explanation
Correct answer: It will increase
An endothermic dissolution absorbs heat, so adding heat by raising temperature can favour the dissolved state. Consequently, the solubility generally increases with temperature for such a solid. This conclusion is based on the equilibrium principle and is a general trend; the exact curve still depends on the substance and solvent. It is not correct to say the solubility must become zero or depend only on pressure.
Frequently asked questions
What is the correct answer to this question?
It will increase
Why is this the correct answer?
An endothermic dissolution absorbs heat, so adding heat by raising temperature can favour the dissolved state. Consequently, the solubility generally increases with temperature for such a solid. This conclusion is based on the equilibrium principle and is a general trend; the exact curve still depends on the substance and solvent. It is not correct to say the solubility must become zero or depend only on pressure.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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