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ChemistryNEET 2024Electrolysis and Faraday's laws; batteries and corrosion

Electrochemistry

The mass in grams of copper deposited by passing a current of 9.6487 A through a voltameter containing copper sulphate solution for 100 seconds is (given molar mass of Cu = , 1 F = 96487 C):

  1. A.0.315 g✓
  2. B.31.5 g
  3. C.0.0315 g
  4. D.3.15 g

Solution

Charge C F. Copper needs 2 F per mole, so mol is deposited: g.

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