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NEET Chemistry Electrochemistry / विद्युत् रसायन Question Bank Self Evaluation Test - Electrochemistry

  • question_answer
    In the electrolysis of \[CuC{{l}_{2}}\] solution, the mass of the cathode increased by 3.2 g. What occured at the copper anode?

    A) 0.12 litre of \[C{{l}_{2}}\] was liberated

    B) 0.56 litre of \[{{O}_{2}}\] was liberated

    C) 0.1 mol \[C{{u}^{2+}}\] passed into the solution.

    D) 0.05 mol of \[C{{u}^{2+}}\] passed into the solution.

    Correct Answer: D

    Solution :

    [d] The amount, of copper deposited at cathode by reduction of \[C{{u}^{2+}}\] ions is \[\frac{3.2}{63}=0.05\] moles. The same amount 0.05 mole of \[C{{u}^{2+}}\] must pass into solution from anode by oxidation


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