Chemistry
The solubility of which of the following substances decreases with a rise in temperature :
- Potassium chloride
- Hydrated sodium sulphate
- Calcium hydroxide
- Potassium nitrate
Water
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Answer
Calcium hydroxide
Reason — In an exothermic process, the solubility increases on lowering the temperature.
For example: solubility of calcium sulphate and calcium hydroxide in water decreases on increasing the temperature.
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