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JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Critical Thinking Solutions

  • question_answer
    An aqueous solution of a weak monobasic acid containing 0.1 g in 21.7g of water freezes at 272.813 K. If the value of \[{{K}_{f}}\] for water is 1.86 K/m, what is the molecular mass of the monobasic acid        [AMU 2002]

    A)                 50 g/mole              

    B)                 46 g/mole

    C)                 55 g/mole              

    D)                 60 g/mole

    Correct Answer: D

    Solution :

                \[m=\frac{{{K}_{f}}\times w\times 1000}{\Delta {{T}_{f}}\times W}=60\,g/mole\].


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