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

  • question_answer
    A certain quantity of electricity is passed through an aqueous solution of \[AgN{{O}_{3}}\] and cupric salt solution connected in series. The amount of \[Ag\] deposited is \[1.08\,gm\], the amount of copper deposited is (atomic weight of Cu = 63.5; Ag = 108)                                    [EAMCET 1986]

    A)                 0.6454 g              

    B)                 6.354 g

    C)                 0.3177 g              

    D)                 3.177 g

    Correct Answer: C

    Solution :

               \[\frac{\text{Wt}\text{.}\,\text{of}\ Cu}{\text{Wt}\text{.}\,\text{of}\,Ag}=\frac{\text{Eq}\text{. }\text{wt}\text{.}\,\text{of}\,Cu}{\text{Eq}\text{.}\,\text{wt}\text{.}\,\text{of}\,Ag}\];\[\frac{\text{Wt}\text{.}\,\,\text{of}\,\,Cu}{1.08}=\frac{63.5/2}{108}\]                                  Wt. of \[Cu=0.3177\,\,gm\].


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