JEE Main & Advanced Chemistry Electrochemistry / विद्युत् रसायन Question Bank Cell constant and Electrochemical cells

  • question_answer
    Which of the following reactions occurs at the cathode during the charging of a lead storage battery [Manipal MEE 1995; MP PET 2002]

    A)                 \[P{{b}^{2+}}+2{{e}^{-}}\to Pb\]

    B)                 \[P{{b}^{2+}}+SO_{4}^{2-}\to PbS{{O}_{4}}\]

    C)                 \[Pb\to P{{b}^{2+}}+2{{e}^{-}}\]

    D)                 \[PbS{{O}_{4}}+2{{H}_{2}}O\to 2Pb{{O}_{2}}+4SO_{4}^{2-}+2{{e}^{-}}\]

    Correct Answer: D

    Solution :

                    \[PbS{{O}_{4}}+2{{H}_{2}}O\to 2Pb{{O}_{2}}+4SO_{4}^{-\,-}+2{{e}^{-}}\].


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