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NEET Sample Paper NEET Sample Test Paper-77

  • question_answer
    The pH of the solution is defined as the negative logarithm of the concentration of hydrogen ions which it contains. pH of \[0.365 g{{L}^{-\,1}}\,HCl\] solution will be

    A)  1                                

    B)  2

    C)  3                                

    D)  0.1   

    Correct Answer: B

    Solution :

    Molar mass of \[\operatorname{HC}l = 36.5\] Concentration of \[HCl=\frac{0.365}{36.5}=1\times {{10}^{-\,2}}\,mol\,\,{{L}^{-\,1}}\] HCl is a strong acid \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,pH\,=\,\,-\log \,[{{H}^{+}}]\] \[=\,\,-log1{{0}^{-}}^{2}\] \[=\,\,\,\,-1\times -\,2=2\]


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