Question

A silver-plated spoon typically contains about 2.00 g of Ag. If 12.0 hours are required to
achieve the desired thickness of the Ag coating, what is the average current per spoon that
must flow during the electroplating process, assuming an efficiency of 100%?
Hint: Atomic weight of silver is 107.8 g/mole​

Answer 1

Answer:

Charge passed through the electrolyte:

Q=It

Q=7×1.93×3600 C

Q=48636 C

Reduction process:

Ag

+

+e→Ag

One mole of electron charge (96500 C) will produce 108 g Ag

Moles of electron=

96500

48636

=0.504

Total silver deposited:

=0.504×108=54.432 g Ag

coating on one spoon =0.01 g Ag

number of spoons coated × coating on 1 spoon = 54.432

number of spoons coated =

0.01

54.432

=5443 spoons

Explanation:

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