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 e.m.f. of 2.0 Vat 298 K. If the potential of copper electrodes is 0.34 V, that of aluminium electrode is

A

`+2.34 V`

B

`-2.34 V`

C

`1.66 V`

D

`-1.66 V`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Similar Questions

Explore conceptually related problems

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

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

The e.m.f. of a cell is 1.3 V. The positive electrode has a potential of 0.5 V. The potential of negative electrode is :

Which metal can displace hydrogen from dilute acids from the following data. E_(zn//zn^(2+))=-076V.E_(Cu//Cu^(2+))=0.343V

The standard reduction potentials of Cu ^(2+) | Cu and Cu ^(2+) | Cu ^(+) are 0.337 and 0. 153V respectively. The standard electrode potential of Cu ^(+) | Cu half cell is