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Ratio of the molar masses of two solutes from their colligative effects

This type of question, asked 2 times: 25 Jul 2022, 27 Jul 2022. All 2 questions below, oldest first.

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  1. Question 1

    25 Jul 2022

    122
    Two solutions AA and BB are prepared by dissolving 1 g1\text{ }g of non-volatile solutes XX and YY. respectively in 1 kg1\text{ }kg of water. The ratio of depression in freezing points for AA and BB is found to be 1:41:4. The ratio of molar masses of XX and YY is:

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  2. Question 2

    27 Jul 2022

    35
    Boiling point of a 2%2\% aqueous solution of a nonvolatile solute AA is equal to the boiling point of 8%8\% aqueous solution of a non-volatile solute BB. The relation between molecular weights of AA and BB is.

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