Consider two cells, the first with Al and Ag electrodes, and the second with Zn
ID: 1020798 • Letter: C
Question
Consider two cells, the first with Al and Ag electrodes, and the second with Zn and Ni electrodes, each in appropriate 1.00 M solutions of their ions. a) If connected as voltaic cells in series, which two metals are plated, and what is the total potential? (Al,Ag,Zn,Ni) b) If connected such that one cell acts as a battery to power the other as an electrolytic cell, which two metals are plated, and what is the total potential? (Al,Ag,Zn,Ni) c) If 3.70 g of metal is plated in the voltaic cell, how much metal is plated in the electrolytic cell?
Explanation / Answer
A) Ag and Ni get plated, 2.98 V
B)Ag and Zn get plated, 1.98 V
C) 3.70g Ag x (1mol Ag/ 107.868g Ag) x (1mol Zn/ 2molAg) x (65.389g Zn/ 1mol Zn) = 0.74g Zn