Electrochemistr...

The emf of the cell H₂ (1 atm) Pt |H⁺ (a = x) ||H₂ (1atm)pt at 25^oC is 0.59 V. The pH of the solution is

If the standard electrode potential of Cu²⁺/Cu electrode is 0.34 V, what is the electrode potential of 0.01 M concentration of Cu²⁺ ? (T= 298 K)

The specific conductances of four electrolytes in ohm^-1 cm^-1 are given below. Which one offers higher resitance to the passage of electric current?

The equivalent conductances at infinite dilution (^₀) for electrolyte BA and CA are 140 and 120 S cm² eq^-1. The equivalent conductance at infinite dilution for BX is 198 S cm² eq^-1. The ^₀ (in S cm² eq^-1 ) of CX is

A current of 12 ampere is passed through an electrolytic cell containing aq. NiSO₄ solution. Both Ni and H₂ gas are formed at the cathode. The current efficiency is 60%. What is the mass of nickel deposited on the cathode per hour ? (At. wt. of Ni = 98 .7)

Resistance of 0.2 M solution of an electrolyte is 50Ω. The specific conductance of the solution is 1.3 Sm^-1. If resistance of the 0.4 M solution of the same electrolyte is 260Ω, its molar conductivity is

Suppose that gold is being plated on to another metal in an electrolytic cell. The half reaction producing the Au (s) is
AuCl^‒₄ → Au(s) + 4Cl^‒ ‒ 3e^‒
If a 0.30 A current run for 15 min, what mass of Au(s) will be plated, assuming all the electrons are used in the reduction of AuCl^‒₄? The Faraday constant is 96485 c/mol and molar mass of Au is 197.

Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (atomic mass = 27 u; 1F = 96500 C). The cathode reaction is
Al ³⁺ + 3e^‒ → Al⁰
To prepare 5.12 kg of aluminium metal by this method would require