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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2003

  • question_answer
    A solution of 4.5 g of a pure non-electrolyte in 100 g of water was found to freeze at\[0.465{}^\circ C\]. The molecular weight of the solute is closest to: \[({{k}_{f}}=1.86)\]

    A)  135.0                   

    B)         172.0

    C)  90.0                      

    D)         86.2

    E)  180.0

    Correct Answer: E

    Solution :

    \[m=\frac{1000\times {{k}_{f}}\times w}{\Delta {{T}_{f}}\times W}\] \[=\frac{1000\times 1.86\times 4.5}{0.465\times 100}\] \[=180g\]


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