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

  • question_answer
    The boiling point of a solution of 0.1050 gm of a substance in 15.84 gram of ether was found to be \[{{100}^{o}}C\] higher than that of pure ether. What is the molecular weight of the substance [Molecular elevation constant of ether per 100 g = 21.6]                                      [UPSEAT 2001]

    A)                 144.50  

    B)                 143.18

    C)                 140.28  

    D)                 146.66

    Correct Answer: B

    Solution :

                \[m=\frac{{{K}_{b}}\times w\times 1000}{\Delta {{T}_{b}}\times W}=143.18\]


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