- #1
Raghav Gupta
- 1,011
- 76
Homework Statement
A variable , opposite external potential ## E_{ext} ## is applied to the cell Zn | Zn2+ (1M) || Cu2+ (1M) | Cu, of potential 1.1V . When Eext < 1.1 V and Eext > 1.1V , respectively electrons flow from :
1. anode to cathode and cathode to anode
2. cathode to anode and anode to cathode
3. cathode to anode in both cases
4. anode to cathode in both cases
Homework Equations
NA
The Attempt at a Solution
At anode oxidation happens and at cathode reduction.
So electrons are moving from anode to cathode when Eext < 1.1 V and cathode to anode when Eext > 1.1 V
So option 1 is looking correct.
In answer key option 4 that is anode to cathode in both cases is given.
Why?