Consider an electrochemical cell constructed from the following half cells, link
ID: 850448 • Letter: C
Question
Consider an electrochemical cell constructed from the following half cells, linked by a KCl salt bridge
a Fe electrode in 1.0 M FeCl2 solution
a Ni electrode in 1.0 M Ni(NO3 )2 solution
When the cell is running spontaneously, which choice includes only true statements and no false ones?
A. The nickel electrode loses mass and the nickel electrode is the cathode. B. The nickel electrode gains mass and the nickel electrode is the cathode. C. The iron electrode gains mass and the iron electrode is the anode. D. The iron electrode loses mass and the iron electrode is the cathode. Consider an electrochemical cell constructed from the following half cells, linked by a KCl salt bridge a Fe electrode in 1.0 M FeCl2 solution a Ni electrode in 1.0 M Ni(NO3 )2 solution When the cell is running spontaneously, which choice includes only true statements and no false ones? A. The nickel electrode loses mass and the nickel electrode is the cathode. B. The nickel electrode gains mass and the nickel electrode is the cathode. C. The iron electrode gains mass and the iron electrode is the anode. D. The iron electrode loses mass and the iron electrode is the cathode.Explanation / Answer
Between Ni and Fe , Fe is more active so Fe goes to Fe 2+ and so is called anode (oxidation occures at anode and redcution happens at cathode).
Anode will loose mass and cathode will generally gain mass or stay without gaining mass.
The nickel electrode gains mass and the nickel electrode is the cathode