Uttarakhand PMT Uttarakhand PMT Solved Paper-2009

  • question_answer
    The pH of a solution is 4. Its\[[{{H}^{+}}]\]is

    A)  4M           

    B)  \[{{10}^{4}}M\]

    C)  \[{{10}^{-4}}M\]        

    D)  \[{{10}^{-1}}M\]

    Correct Answer: C

    Solution :

     \[pH=-\log [{{H}^{+}}]\] or        \[[{{H}^{+}}]=1\times {{10}^{-pH}}\] For a solution of pH 4. \[[{{H}^{+}}]=1\times {{10}^{-4}}M\]


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