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2 Dec 2021
Given information
The density of gold is
.
.The surface area is
.
.Current is
.
.Oxidation state of gold is
.
.Thickness of gold is
.
.
Step-by-step explanation
Step 1.
A thin layer of gold can be applied to another material by electrolytic process.
The volume of gold is calculated by the formula,
Substitute the value of surface area and thickness in the above equation.
Mass of gold is calculated by the formula,
Substitute the value of density and volume in the above equation.
Number of moles of Au is calculated by the formula,
Molar mass of Au is
.
.Substitute the value of mass and molar mass of Au in the above equation.
Oxidation state of gold is
Hence, 1 mol Au produces 3 mol 
.
.
Therefore, 
Au produces 
Au produces Charge produced by one mole is
.
is.
Therefore, charge produced by
.
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Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944