MHT CET 202622 AprilMorning Shift
- Exam
- MHT CET
- Year
- 2026
- Date
- 22 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- Chemical Equilibrium
MHT CET 2026 · 22 April · Morning Shift · Chemistry · Chemical Equilibrium
For which of the following solids does solubility decrease with an...
For which of the following solids does solubility decrease with an increase in temperature?
Options
- APotassium nitrate
- BSodium nitrate
- CSodium sulphate.
- DPotassium chloride
Correct answer
C. Sodium sulphate.
Step-by-step solution
The effect of temperature on the solubility of a solid depends on whether the dissolution process is endothermic or exothermic.
According to Le Chatelier's principle, if the dissolution is endothermic, solubility increases with temperature. If the dissolution is exothermic, solubility decreases with temperature.
The dissolution of potassium nitrate, sodium nitrate, and potassium chloride in water are endothermic processes, so their solubilities increase as temperature rises.
For sodium sulphate, above its transition temperature, it exists in its anhydrous form and its dissolution is an exothermic process. Therefore, its solubility decreases with an increase in temperature.
Answer: Sodium sulphate.
According to Le Chatelier's principle, if the dissolution is endothermic, solubility increases with temperature. If the dissolution is exothermic, solubility decreases with temperature.
The dissolution of potassium nitrate, sodium nitrate, and potassium chloride in water are endothermic processes, so their solubilities increase as temperature rises.
For sodium sulphate, above its transition temperature, it exists in its anhydrous form and its dissolution is an exothermic process. Therefore, its solubility decreases with an increase in temperature.
Answer: Sodium sulphate.