Electrochemistr...

 Cell reaction is spontaneous when

Three cell A, B and C has equilibrium constant in the ratio 1:4 : 9 respectively. Arrange the following cells in the order of increasing Gibbs free energy.

 Gibbs free energy change for a cell reaction is positive what does it indicates?

 At equilibrium:

In the equation, ΔG° = – nF E° cell ; F is:

 Consider the cell reaction:
Cd(s) | Cd²⁺ (1.0 M) || Cu²⁺ (1.0 m) | Cu (s)
If we wish to make a cell with more positive voltage using the same substances, we should:

. The electrode potential at any concentration measured with respect to standard hydrogen electrode can be represented by:

. For an equation: Ni(s) + 2Ag⁺(aq) → Ni²⁺ (aq) + 2Ag(s) the Nernst equation is written as:

Nernst equation for an electrode is based on the variation of electrode potential of an electrode with:

 The free energy change for the following cell reaction is given as :

2Au³⁺ (aq) + 3Cu (s) → 2Au (s) + 3Cu²⁺ (aq)