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JEE Main & Advanced Chemistry Solutions / विलयन Question Bank Method of expressing concentration of solution

  • question_answer
    The mole fraction of the solute in one molal aqueous solution is [CBSE PMT 2005]

    A)                 0.027     

    B)                 0.036

    C)                 0.018     

    D)                 0.009

    Correct Answer: C

    Solution :

           \[W=1000\,gm\]  \[({{H}_{2}}O)\]; \[n=1\] mole                    \[N=\frac{W}{M}=\frac{1000}{18}=55.55\]                                 \[{{x}_{\text{Solute}}}\]= \[\frac{n}{n+N}=\frac{1}{1+55.55}\]= 0.018.


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