An electrolytic reduction of an aqueous solution containing the trivalent ion of an…
CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry
Problem
An electrolytic reduction of an aqueous solution containing the trivalent ion of an unknown metal, M³⁺, is carried out with a current of 0.600 A for 40.0 min. Because of competing side reactions, only 75.0 % of the current actually contributes to metal deposition. If 0.480 g of metal is obtained, which of the following molar masses is most consistent with the experimental results?
(a) 97gmol−1
(b) 86gmol−1
(c) 129gmol−1
(d) 72gmol−1