A constant current of 2.0 A is passed through an electrolytic cell containing…
CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
A constant current of 2.0 A is passed through an electrolytic cell containing Cu²⁺(aq) for exactly 10 min, producing 0.394 g of copper metal at the cathode. If the current is instead adjusted to 4.0 A and allowed to flow for 5.0 min, which of the following best predicts the mass of copper that will be deposited?
(a) 0.788 g
(b) 0.394 g
(c) 0.197 g
(d) 1.58 g