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JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank Hydrogenion concentration pH scale and buffer solution

  • question_answer
    Assuming complete ionisation, the pH of \[0.1\,M\,HCl,\] is 1. The molarity of \[{{H}_{2}}S{{O}_{4}}\] with the same  pH is  [Pb. PMT 2002]

    A)                 0.1         

    B)                 0.2

    C)                 0.05       

    D)                 2.0

    Correct Answer: A

    Solution :

               The pH of 0.1M \[HCl=1\] Ionization of \[{{H}_{2}}S{{O}_{4}}\]takes place in two steps.                                 \[{{H}_{2}}S{{O}_{4}}\]⇌\[{{H}^{+}}+HSO_{4}^{-}\] ; \[HSO_{4}^{-}\]⇌\[{{H}^{+}}+SO_{4}^{-\,-}\]


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