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NEET Sample Paper NEET Sample Test Paper-40

  • question_answer
    What is the pH of the resulting solution when equal volumes of \[0.1\,M\,NaOH\]and 0.01 MHCl are mixed?

    A)  7.0

    B)  1.04

    C)  12.65

    D)  2.0

    Correct Answer: C

    Solution :

    \[{{N}_{1}}{{V}_{1}}-{{N}_{2}}{{V}_{2}}=NV\] \[0.1\times 1-0.01\times 1=N\times 2\] \[[O{{H}^{-}}]={{N}_{R}}=\frac{0.09}{2}=0.045\,N\] \[pOH=-\log (0.045)=13.5\] \[\therefore \]\[pH=14-pOH=14-1.35=12.65\]


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