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Which concentration terms change with temperature

This type of question, asked 3 times: 27 Jun 2022, 27 Jan 2024, 2 Apr 2025. All 3 questions below, oldest first.

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  1. Question 1

    27 Jun 2022

    31
    Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: At 10∘C10^{\circ}C, the density of a 5 M5\ M solution of KClKCl [atomic masses of KK and ClCl are 39 and 35.5 g mol−135.5\ g\ mol^{-1}] is x g mL−1x\ g\ mL^{-1}. The solution is cooled to −21∘C-21^{\circ}C. The molality of the solution will remain unchanged. Reason R: The molality of a solution does not change with temperature as mass remains unaffected with temperature. In the light of the above statements, choose the correct answer from the options given below:

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  2. Question 2

    27 Jan 2024

    136
    The quantity which changes with temperature is:

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  3. Question 3

    2 Apr 2025

    112
    ' x ' g of NaCl is added to water in a beaker with a lid. The temperature of the system is raised from 1∘C1^{\circ}C to 25∘C25^{\circ}C. Which out of the following plots, is best suited for the change in the molarity (M) of the solution with respect to temperature ?[Consider the solubility of NaCl remains unchanged over the temperature range]

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