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Q.

Which of the following is true?

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a

Molarity of a solution is independent of temperature.

b

Molality of a solution is independent of temperature.

c

Mole fraction of a solute in a solution is dependent on temperature.

d

The unit of molality is mol dm3 ·

answer is B.

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Detailed Solution

 Molality = number of moles of the solute  mass of the solvent in kg 

The mass of the solvent and the number of moles of solute are not affected by the solution's temperature.
Molality is therefore not temperature dependent.

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