What is the effect of temperature on solubility of `KNO_3` and `CaSO_4` in water ?

Explanation

To answer the question regarding the effect of temperature on the solubility of KNO3 (potassium nitrate) and CaSO4 (calcium sulfate) in water, we can follow these steps:

### Step 1: Understand the Concepts of Solubility and Temperature
Solubility is the ability of a substance to dissolve in a solvent (in this case, water). The solubility of solids in liquids can be affected by temperature.

### Step 2: Identify the Nature of the Dissolution Process
The dissolution of a solid in water can be either an endothermic or exothermic process:
- **Endothermic Reaction**: Absorbs heat from the surroundings. The solubility increases with temperature.
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