What will be at anode and cathode respectively in a Daniel cell ?

Options

A. `Zn|Zn^(2+)` and `Cu^(2+) | Cu`
B. `Cu|Cu^(2+)` and `Zn^(2+) | Zn`
C. `Fe|Fe^(2+)` and `Cu^(2+)|Cu`
D. `Cu|Cu^(2+)` and `Fe^(2+)|Fe`

Answer

A

Explanation

In Daniel cell, oxidation occurs at anode and reduction occurs at cathode. Thus, the element, which has higher negative value of reduction potential, is used as anode and that with lower negative value of reduction potential is used as cathode.
Reduction potential of Zn is more negative than Cu
`therefore Zn|Zn^(2+)` is anode and `Cu^(2+) |Cu` is cathode.