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J & K CET Medical J & K - CET Medical Solved Paper-2000

  • question_answer
    If pH value of 0.1 mol/L\[HCl\] is nearly 1, then pH value of 0.05 mol/L\[{{H}_{2}}S{{O}_{4}}\]is:

    A)  0.5                                        

    B)  1.0

    C)  0.05                                      

    D)  2.00

    Correct Answer: B

    Solution :

                    \[0.05\text{ }M\text{ }{{H}_{2}}S{{O}_{4}}=2\times 0.05\] \[=0.1\,M\,[{{H}^{+}}]\] \[\therefore \]  \[[{{H}^{+}}]=1\times {{10}^{-1}}\]                 \[pH=-\log [{{H}^{+}}]\]                 \[=-\log [{{10}^{-1}}]=\log 10\]                 \[pH=1\]


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