Which of the following statements is/are correct?

Question

Which of the following statements is/are correct? (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

Tardigrade Admin · Accepted Answer

a. There will be a depression in the freezing point by the addition of glucose in water
b.

α

increases as concentration decreases
c.

Δ_{sol} H = Δ_{latice} H + Δ_{hyd} H

(-ve) (-ve)
d. Mixing of solution is always accompained by an increase in entropy (randomness)

Q. Which of the following statements is/are correct?

The freezing point of water is depressed by the addition of glucose

The degree of dissociation of a weak electrolyte decrease as its concentration decreases

Energy is released when a substance dissolves in water provided that the hydration energy of the substance is more than its lattice energy

If two liquids that form an ideal solution are mixed, the change in entropy is positive

a. There will be a depression in the freezing point by the addition of glucose in water b. α increases as concentration decreases c. Δsol ​H=Δlatice ​H+Δhyd ​H (-ve) (-ve) d. Mixing of solution is always accompained by an increase in entropy (randomness)

a. There will be a depression in the freezing point by the addition of glucose in water
b. $α$ increases as concentration decreases
c. $Δ_{sol} H = Δ_{latice} H + Δ_{hyd} H$
(-ve) (-ve)
d. Mixing of solution is always accompained by an increase in entropy (randomness)