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How many grams of silver could be plated out on a serving tray by electrolysis of solution containing silver in +1 oxidation state for a period of 8 hours at a current of 8.46 ampers. What is the area of the tray if the thickness of the silver plating is 0.00254 cm? Density of silver is 10.5 g c m 3 .

Options

  1. A1.02 × 1 0 4 c m 2
  2. B102 × 1 0 4 c m 2
  3. C10.2 × 1 0 4 c m 2
  4. DNone

Correct answer

A. 1.02 × 1 0 4 c m 2

Step-by-step solution

W = E C t F = 107.8 × 8.46 × 8 × 60 × 60 96500 = 272.178 g Volume of silver = w t . D e n s i t y = 272.178 10.5 = 25.9 ml Surface area = V o l u m e T h i c k n e s s = 25.95 0.00254 = 1.02 × 1 0 4 c m 2

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