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

  • question_answer
    5 ml of N HCl, 20 ml of N/2 \[{{H}_{2}}S{{O}_{4}}\] and 30 ml of N/3 HNO3 are mixed together and volume made to one litre. The normally of the resulting solution is    [Kerala CET (Med.) 2003]

    A)                 \[\frac{N}{5}\]      

    B)                 \[\frac{N}{10}\]

    C)                 \[\frac{N}{20}\]    

    D)                 \[\frac{N}{40}\]

    E)                 \[\frac{N}{25}\]

    Correct Answer: D

    Solution :

           \[NV={{N}_{1}}{{V}_{1}}+{{N}_{2}}{{V}_{2}}+{{N}_{3}}{{V}_{3}}\]                 or, \[1000N=1\times 5+\frac{1}{2}\times 20+\frac{1}{3}\times 30\]or \[N=\frac{1}{40}\].


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