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

  • question_answer
    The volumes of \[4\,N\,HCl\] and \[10\,N\,HCl\] required to make 1 litre of \[6\,N\,HCl\] are       [Kerala PMT 2004]

    A)                 0.75 litre of 10 N HCl and 0.25 litre of 4 N HCl              

    B)                 0.25 litre of 4 N HCl and 0.75 litre of 10 N HCl

    C)                 0.67 litre of 4 N HCl and 0.33 litre of 10 N HCl

    D)                 0.80 litre of 4 N HCl and 0.20 litre of 10 N HCl

    E)                 0.50 litre of 4 N HCl and 0.50 litre of 10 N HCl

    Correct Answer: C

    Solution :

                \[{{N}_{1}}{{V}_{1}}+{{N}_{2}}{{V}_{2}}=NV\] \[4x+10(1-x)=6\times 1\]; \[-6x=-4\] ; \[x=0.66\]


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