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The density of copper is 8.94 g m L - 1 . Find the charge needed to plate an area of 10 × 10 c m 2 to a thickness of 1 0 - 2 cm using a CuS O 4 solution as electrolyte (atomic weight of Cu = 63.6 g/mol).

Options

  1. A2.7 × 1 0 4 C
  2. B8.8 × 1 0 4 C
  3. C18.3 × 1 0 4 C
  4. D1.7 × 1 0 4 C

Correct answer

A. 2.7 × 1 0 4 C

Step-by-step solution

W = M n F I t or ρ × V = M n F Q . Q = ρ × a r e a × t h i c k n e s s M × n F = 8.94 × 10 × 10 × 1 0 - 2 × 2 × 96500 63.6 = 2.7 × 1 0 4 C .

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