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NTA Abhyas NEET2020ChemistryElectrochemistryPractice

Two different electrolytic cells filled with molten C u ( N O 3 ) 2 and molten A l ( N O 3 ) 3 respectively are connected in series. When electricity is passed 2 .7 g Al is deposited on electrode. Calculate the weight of Cu deposited on cathode. [ C u = 63.5 ; A l = 27.0 g m o l - 1 ]

Options

  1. A190.5 g
  2. B9.525 g
  3. C63.5 g
  4. D31.75 g

Correct answer

B. 9.525 g

Step-by-step solution

w t . o f A l d e p o s i t e d w t . o f C u d e p o s i t e d = e q . w t . o f A l e q . w t . o f C u 2.7 w t . o f C u = 27 / 3 63.5 / 2 wt. of Cu = 9.525 g

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