Write the electrode reaction taking place during the use of a dry cell.

Answer:

Anode: Zn + Zn2+ → 2e
Cathode: MnO2(s) + NH4+ + e– →MnO(OH) (s) + NH3 (aq)

124 Views

Predict the products of electrolysis of a dilute aqueous solution of sulphuric acid with inert electrodes.

Answer:
The electrolysis of an aqueous solution of sodium sulphate using inert electrodes produces hydrogen at the cathode and oxygen at the anode and a neutral solution of sodium sulphate remains unaltered by the electrolysis.
At the cathode:
2H+ + 2e → H2
At the anode:
2H2O → O2 + 4H+ + 4e

147 Views

Advertisement

How is the unit of molar conductivity arrived at?


Answer:
It can be given by;

m = kCm=Ohm-1 m-1mol m-3        = ohm-1m2mol-1.
161 Views

Advertisement
Explore the possibility of a substance that can be replace MnO2 is designing a dry cell.

Answer:
MnO
2 oxidises hydrogen into water.
Hence some other oxidizing agent can replace MnO2 in designing dry cell.
102 Views

Why is the equilibrium constant K related to only
cell and not Ecell?

Answer:

This is because at equilibrium, E
cell becomes zero.
114 Views

Advertisement