JEE Main & Advanced Chemistry Electrochemistry / विद्युत् रसायन Question Bank Electrolytes and Electrolysis

  • question_answer
    In electrolysis of aqueous copper sulphate, the gas at anode and cathode is                                        [AFMC 1995]

    A)                 \[{{O}_{2}}\] and \[{{H}_{2}}\]  

    B)                 \[S{{O}_{2}}\] and \[{{H}_{2}}\]

    C)                 \[{{H}_{2}}\] and \[{{O}_{2}}\]  

    D)                 \[S{{O}_{3}}\] and \[{{O}_{2}}\]

    Correct Answer: A

    Solution :

               Cathode:   \[2{{H}_{2}}O+2{{e}^{-}}\to {{H}_{2}}+2O{{H}^{-}}\]                                 Anode : \[{{H}_{2}}O\to 2{{H}^{+}}+\frac{1}{2}{{O}_{2}}+2{{e}^{-}}\].


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