Electrochemical Cells - Chemistry Jamb Past Questions and Answers

Question 1 :

• JAMB 2019

The cost of discharging 6.0g of a divalent metal, X from its salt is What is the cost of discharging 9.0g of a trivalent metal, Y from its salt under the same condition?
[X = 63, Y = 27, 1F = 96,500C]

A. N12.00
B. N27.00
C. N63.00
D. N95.00

Question 2 :

• JAMB 1985

A correct electrochemical series can be obtained from K, Na, Ca, Al, Mg, Zn, Fe, Pb, H, Cu, Hg, Ag, Au by interchanging?

A. Al and Mg
B. Zn and Fe
C. Zn and Pb
D. Pb and H
E. Au and Hg