Question

Why is the molality of solution independent of temperature?

Answer 1

Answer:

MOLALITY does not depend on temperature because Molality is the number of moles of solute per kilogram of the SOLVENT, NOT solution! . (Neither number of moles of solute nor mass of solvent will be affected by changes of temperature.)

Answer 2

The molality of solution independent of temperature because any change in temperature will not cause any change in mass of solution.

Explanation:

• As we know that molality is the number of moles present in kilogram of solution. Mathematically, expression for molality is as follows.

      Molality = $\frac{\text{no. of moles}}{\text{mass in kg}}$

• So, when we increase the temperature of a solution then there will occur no change in its mass as well as no change in its number of moles. As a result, there will occur no change in molality of the solution.

• This means molality is independent of temperature. Therefore, any increase or decrease in temperature will not affect the molality of the solution.

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