The standard reduction potential for the reaction Sn⁴⁺ + 2e^- ⟶ Sn²⁺ is + 0.15v. Calcuate the free energy change of the reaction.

The emf of the cell Cd/CdCl₂, 25H₂O / AgCI_(s) Ag E^o is 0.675 V. Calculate of the cell reaction.

The emf of the half cell Cu²⁺_(aq)/ Cu_(s). containing 0.01 M Cu²⁺solution is + 0.301V. Calculate the standard emf of the half cell

Calculate the standard emf of the cell having the standard free energy change of the cell reaction is -64.84 kJ for 2 electrons transfer.

The equilibrium constant of cell reaction: Ag_(s) + Fe³⁺ ⇌ Fe²⁺ + Ag⁺ is 0.335 at 25°C. Calculate the standard emf of the cell AgI Ag⁺; Fe³⁺, Fe²⁺/Pt. Calculate E^o of the half cell Fe³⁺, Fe²⁺/Pt is 0.7791 V. Calculate E^o of Fe³⁺, Fe²⁺/ Pt half cell.