The logarithm of the equilibrium constant of the cell reaction corresponding to the cell X_(s) | X²⁺_(aq) || Y⁺_(aq) | Y_(s) with standard cell potential, Eo
Cell = 1.2 V is given by

The pH of aqueous KCl solution is 7.0. This solution was electrolyzed for a few seconds using Pt electrodes. Which of the following is correct?

The standard EMF of Daniell cell is 1.10 volt. The maximum electrical work obtained from the Daniell cell is

The standard potentials at 25°C for the half reactions are given against them below.

Zn²⁺+ 2e^– → Zn; E° = –0.762 V

Mg²⁺+ 2e^– →Mg E° = –2.37 V

On the basis of information available for the reaction:

$\dfrac{4}{3}$Al + O₂ → 2Al₂O₃; ΔG = –827 kJ mol^–1 of O₂.

The minimum e.m.f. required to carry out the electrolysis of Al₂O₃ is (F = 96500 C mol^–1)

The standard reduction potential for Cu²⁺/Cu; Zn²⁺/Zn; Li⁺/Li; Ag⁺/Ag and H⁺/H₂ are 0.34 V, –0.762 V, –3.05 V, + 0.80 V and 0.00 V respectively. Choose the strongest reducing agent among the following.

The standard reduction potentials of Ag, Cu, Co and Zn are 0.799, 0.337, –0.277 and –0.762 V respectively. Which of the following cells will have maximum cell e.m.f.?

The Eo
M³⁺/m²⁺values of Cr, Mn, Fe and Co are –0.41, + 1.57, +0.77 and +1.97 V respectively. For which one of these metals the change in oxidation state from +2 to +3 is easiest?

The oxidation state of chromium in the final product formed by the reaction between Kl and acidified potassium dichromate solution is

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