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When the same quantity of electricity is passed through the aqueous solutions of the given electrolytes for the same amount of time, which metal will be deposited in maximum amount on the cathode?

Options

  1. AZnSO 4
  2. BFeCl 3
  3. CAgNO 3
  4. DNiCl 2

Correct answer

C. AgNO 3

Step-by-step solution

By Faraday's law of electrolysis: Equal amount of charge causes deposition of equal number of equivalents of different metals. eg. 1 F charge will deposit one equivalent of any metal. Discharged mass of one equivalent of Zn   from   ZnCl 2 =   65 . 4 2 = 32 . 7   g Discharged mass of one equivalent of Fe   from   FeCl 3 = 56 3 = 18 . 67   g Discharged mass of one equivalent of Ag   from   AgNO 3 = 108 1 = 108   g Discharged mass of one equivalent of Ni   fr

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