Questions

Give the chemical equation that represents the reduction of liquid water ${\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)$ at the platinum anode.

State and explain the Nernst equation with the help of a metallic electrode and anon-metallic electrode.

Explain with a suitable example the relation between the Gibbs energy of chemical reaction (G) and the functioning of the electrochemical cell.

How is molar conductivity of an aqueous solution of an electrolyte measured experimentally?

Explain the variation of molar conductivity with the change in concentration of the electrolyte. Give reasons.

What are the products obtained at cathode and the anode during the electrolysis of the following when platinum electrodes are used in the electrolysis?

Aqueous ${\mathrm{CuSO}}_4$ solution

What are the products obtained at cathode and the anode during the electrolysis of the following when platinum electrodes are used in the electrolysis?

Aqueous ${\mathrm{K}}_2{\mathrm{SO}}_4$ solution

Define average rate of a reaction. How is the rate of reaction expressed in terms of change in the concentration of reactants and products for the reactions

$2\mathrm{HI}\left(\mathrm{g}\right) \to {\mathrm{H}}_2\left(\mathrm{g}\right) +{\mathrm{I}}_2\left(\mathrm{g}\right)$