- Chosen by Voters that depends to what extent your question requires. in simple terms, the feasibility of a reaction can be calculated using the standard cell electrode values.for example, can Cu+ ion be reduced to Cu metal by Fe2+ ions?the electrode reaction for reduction of Cu+ is Cu+ + e- —> Cu (s).the standard cell value is +0.52the electrode reaction for oxidation of Fe2+ to Fe3+ isFe2+ —-> Fe3+ + e-the standard cell value is -0.77.if u add these values together:+0.52 + (-0.77) = -0.25 (a negative value)if a negative value is obtained, this reaction is not feasible i.e. no reaction will occur. if a positive value is obtained, the reaction is possible.alternatively, if you have experimental values of the concentrations of the reactants, a graph can be plotted to see if there is an order of reaction. if there is no order of reaction, the reaction did not occur.good luck. hope this helps. 5 years ago 100% 2 Votes