For the reaction 2 Fe 3 + ( aq ) + 2 I - ( aq ) → 2 Fe 2 + ( aq ) + I 2 ( s ) the magnitude of the standard molar free energy change, ∆ r G m ∘ = - ______ kJ (Round off to the Nearest Integer).

Step-by-step solution

Standard electrode potential is a measurement of the potential for equilibrium. There is a potential difference between the electrode and the electrolyte called the potential of the electrode. When unity is the concentrations of all the species involved in a semi-cell, the electrode potential is known as the standard electrode potential. E 1 0 + 2 E 2 0 = 3 E 3 0 E 1 0 = 3 E 3 0 - 2 E 2 0 = 3 ( - 0 . 036 ) - 2 ( - 0 . 44 ) = + 0 . 772   V E cell  0 = E Fe 3 + / Fe 2 + 0 + E I - / I 2 0 = 0 . 233 Δ r