List of top Chemistry Questions on Electrochemical Cells asked in KCET

For a given half cell, \( \text{Al}^{3+} + 3e^- \rightarrow \text{Al} \) on increasing the concentration of aluminium ion, the electrode potential will

Match the following and select the correct option for the quantity of electricity, in Cmol\(^{-1}\), required to deposit various metals at the cathode.

Catalysts are used to increase the rate of a chemical reaction. Because it

Consider the following 4 electrodes
A : Ag⁺ (0.0001 M)/Ag_(s) ;  B : Ag⁺ (0.1 M) / Ag_(s)
C : Ag⁺ (0.01 M)/Ag_(s) ;        D : Ag⁺ (0.001 M) / Ag_(s); \(E^{\degree}_{Ag^{+/Ag}}\)=+ 0.80 V
Then reduction potential in volts of the electrodes in the order

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 $2.46\, V.$ The reduction potential of silver electrode is $+ 0.80\, V$. The reduction potential of aluminium electrode is :

A device, in which electrical energy is converted into chemical energy, is called:

The incorrect statement about Hall-Heroult process is :