Which of the following statements with reference to a solution are correct?

(A) the molarity of the solution changes with the change in the temperature.
(B) the volume of the solution changes with the change in the temperature.
(C) the molality of the solution changes with the change in the temperature.
(D) the normality of the solution changes with the change in the temperature.

Choose the correct answer from the options given below:

(A), (B) and (D) only

The correct answer is Option (1) → (A), (B) and (D) only

Analysis of the Statements

(A) The molarity of the solution changes with the change in the temperature. Correct. Molarity ($M$) is defined as the number of moles of solute per liter of solution. Since the volume of a liquid expands or contracts with temperature, the molarity will change accordingly.

(B) The volume of the solution changes with the change in the temperature. Correct. Due to thermal expansion, as the temperature of a liquid solution increases, its volume typically increases.

(C) The molality of the solution changes with the change in the temperature. Incorrect. Molality ($m$) is defined as the number of moles of solute per kilogram of solvent. Because mass is an intrinsic property that does not change with temperature, molality remains constant regardless of temperature shifts.

(D) The normality of the solution changes with the change in the temperature. Correct. Normality ($N$) is the number of gram equivalents of solute per liter of solution. Just like molarity, because it is a volume-based unit, it is temperature-dependent.