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?

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].

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.

Write a note on sacrificial protection.

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.