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NEET Sample Paper NEET Sample Test Paper-66

  • question_answer
    36 g water and 828 g ethyl alcohol form an ideal solution. The mole fraction of water in it, is

    A) 1.0                               

    B) 0.7

    C) 0.4                               

    D) 0.1

    Correct Answer: D

    Solution :

    \[N=\frac{W}{M}=\frac{828}{46}=18,\,\,n=\frac{w}{m}=\frac{36}{18}=2\] \[{{x}_{{{H}_{2}}O}}\,=\,\,\,\frac{n}{n+N}=\frac{2}{2+18}\,=\,\,\frac{2}{20}\,\,=\,\,\,0.1\]


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