Which of the following statements is/are correct?

Options

A. The freezing point of water is depressed by the addition of glucose.
B. The degree of dissociation of a weak electrolyte decrease as its concentration decreases.
C. Energy is released when a substance dissolves in water provided that the hydration energy of the substance is more than its lattice energy.
D. If two liquids that form an ideal solution are mixed, the change in entropy is positive.

Answer

A, C, D

Explanation

There will be a depression in the freezing point by the addition of glucose in water.
`alpha` increases as concentration decreases.
`Delta_(sol)H= underset(-ve)(Delta_("latice")H )+ underset (-ve)(Delta_(hyd)H)`
Mixing of solution is always accompanied by an inceases in entropy (randomness).