For a platinum electrode of area 1 cm2 in contact with an aqueous solution of Fe3+ (10-3 M) and Fe2+ (10-3 M) at 300 K, a plot of ln(j) versus η is plotted (where j is current in mA and η is overpotential in mV). The charge transfer resistance (in Ω) for this system is closest to:

Calculate the oxidation potential (emf) of the given half-cell: Pt(s) | H2(g, 2 atm) | HCl(aq, 0.02 M) Given E°H2/H+ = 0 V, 2.303 RTF = 0.059, and log 2 = 0.3010.

A solution of copper sulphate is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at cathode is: (Given: Molar mass of Cu = 63 g mol-1, 1 F = 96487 C mol-1)