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When copper sulphate solution is electrolysed in a copper voltameter for 30 sec, then m gram of copper was deposited. Time current graph for the electrolysis is The electrochemical equivalent of copper from above plot will be

Options

  1. AZ = m
  2. BZ = m 2
  3. CZ = m 5
  4. DZ = 2 m

Correct answer

B. Z = m 2

Step-by-step solution

m = ZIt Z = m I t It = Total charge passed through copper voltameter = Area under the curve = 100 × 10 × 1 0 - 3 + 2 1 2 × 10 × 100 × 1 0 - 3 = 2 So Z = m 2

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