MHT CET Chemistry question
X g of silver is plated out on a serving tray by electrolysis of a solution containing silver in +1 oxidation state for a period of 8.0 h at a current of 8.46 A. What is the area of the tray if the thickness of silver plating is 0.00254 cm ? [Given, density of silver = 10.5 g cm]
Answer: (B)
Solution
Charge = 8.46 × 8 × 3600 = 2.436 × 10 C, so mass of Ag = (108/96500) × 2.436 × 10 = 272.7 g; volume = 272.7/10.5 = 25.97 cm and area =
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