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JEE Main & Advanced Chemistry Electrochemistry / विद्युत् रसायन Question Bank Faraday's law of electrolysis

  • question_answer
    What is the amount of chlorine evolved when 2 amperes of current is passed for 30 minutes in an aqueous solution of \[NaCl\]          [BHU 1998; AIIMS 1999]

    A)                 66 g       

    B)                 1.32 g

    C)                 33 g       

    D)                 99 g

    Correct Answer: B

    Solution :

               At Andoe \[At\,\,Anode\,\,\,C{{l}^{-}}\to \frac{1}{2}C{{l}_{2}}+{{e}^{-}}\]            \[{{E}_{C{{l}_{2}}}}=\frac{35.5\times 2}{2}=35.5\]                                 \[{{W}_{C{{l}_{2}}}}=\frac{{{E}_{C{{l}_{2}}}}\times I\times t}{96500}\]\[=\frac{35.5\times 2\times 30\times 60}{96500}=1.32\,\,gm\].


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