Solubility curves (g solute per 100 g water) are plotted against temperature for KNO3, NaCl, and Ce2(SO4)3.
Which salt's solubility decreases with temperature?
- A
KNO3
- Bcheck_circle
Ce2(SO4)3
- C
NaCl
- D
All increase
Explanation
Most salts dissolve more readily as T rises, but cerium sulfate is one of the rare exceptions whose dissolution is exothermic, so solubility decreases with rising T.