Calculate the standard emf of the cell: Cd|Cd²⁺||Cu²⁺|Cu and determine the cell reaction. The standard reduction potentials of Cu²⁺|Cu and Cd²⁺|Cd are 0.34V and -0.40 volts respectively. Predict the feasibility of the cell reaction.

In fuel cell H₂ and O₂ react to produce electricity. In the process, H₂ gas is oxidised at the anode and O₂ at cathode. If 44.8 litre of H₂ at 25⁰C and 1 atm pressure reacts in 10 minutes, what is average current produced? If the entire current is used for electro deposition of Cu from Cu²⁺, how many grams of Cu deposited?

The same amount of electricity was passed through two separate electrolytic cells containing solutions of nickel nitrate and chromium nitrate respectively. If 2.935 g of Ni was deposited in the first cell. The amount of Cr deposited in the another cell? Give : molar mass of Nickel and chromium are 58.74 and 52gm^-1 respectively.

A copper electrode is dipped in 0.1M copper sulphate solution at 25^oC. Calculate the electrode potential of copper. [Given: E⁰_Cu²⁺|Cu = 0.34V].

For the cell Mg (s) Mg²⁺(aq)||Ag⁺(aq)|Ag(s), calculate the equilibrium constant at 25⁰C and maximum work that can be obtained during operation of cell. Given: \(E^{0}_{Mg^{2+}|Mg}\)=-237V and \(E^{0}_{Ag^{2+}|Ag}\) = 0.80V.

9.2\(\times\)10¹² litres of water is available in a lake. A power reactor using the electrolysis of water in the lake, produces electricity at the rate of 2\(\times\)10⁶ Cs⁻¹ at an appropriate voltage. How many years would it take to completely electrolyse the water in the lake. Assume that there is no loss of water except due to electrolysis.

Derive an expression for Nernst equation.

Write a note on sacrificial protection.

Explain the function of H₂ - O₂ fuel cell.

Ionic conductance at infinite dilution of Al³⁺ and SO₄ ^2- are 189 and 160 mho cm² equiv^-1. Calculate the equivalent and molar conductance of the electrolyte Al₂(SO₄)₃ at infinite dilution.