Home
Class 12
CHEMISTRY
Aluminium displaces hydrogen from acids,...

Aluminium displaces hydrogen from acids, but copper does not. A galvanic cell prepared by combining `Cu| Cu^(2+)` and `Al|Al^(3+)` has an emf of 2.0 V at 298 K. If the potential of copper electrode is + 0.34 V, that of aluminium electrode is

A

`+1.66V`

B

`-1.66V`

C

`+2.34V`

D

`-2.3V`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Aluminium displaces hydrogen from dilute HCl whereas silver does not. The e.m.f. of a cell prepared by combining Al//Al^(3+) and Ag// Ag^(+) is 2.46V. The reduction potential of silver electrode is +0.80V. The reduction potential of aluminium electrode is

The emf of a galvanic cell, with electrode potentials of silver = + 0. 80 V and that of copper = + 0.34 V , is .

Assertion: Cu^(2+) ions get reduced more easily than H^+ ions. Reason: Standard electrode potential of copper is 0.34 V.