Question

The solubility of this salt does not change with the rise in temperature of the solution:
A. Sodium nitrate
B. Sodium chloride
C. Sodium sulphate
D. Ammonium chloride

Answer 1

The solubility of sodium chloride does not change with rise in temperature of the solution.

Explanation : solubility depends on whether the dissolution process is exothermic or endothermic.

For exothermic process, dissolution decreases with increasing in temperature while dissolution increases with increasing in temperature.

Here dissolution of NaCl is an endothermic process so solubility should increase after increasing its temperature but here it remains same. Because heat of solution is very small ( because heat of Ionisation is nearly equal to heat of hydration)

so solubility of it doesn't change with the rise of temperature.

Therefore correct option is (B) sodium chloride.

Answer 2

Answer:

sodium chloride is the right answer