A circular silver medallion of diameter 4.0 cm is to be plated on BOTH faces (edges…
CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
A circular silver medallion of diameter 4.0 cm is to be plated on BOTH faces (edges are neglected) with a uniform 10.0 µm layer of silver. The current supplied is 1.20 A. The plating solution contains Ag⁺ ions. Relevant data: atomic mass of Ag = 107.9 g mol⁻¹; density of Ag = 10.5 g cm⁻³; Faraday constant = 9.65 × 10⁴ C mol⁻¹.
What is the minimum time required for the plating, in minutes?
(a) 6.6min
(b) 1.7min
(c) 3.3min
(d) 13min