The degree of dissociation, α, is defined as the fraction of reactant that has decomposed; if the initial amount of reactant is n and the amount at equilibrium is neq, then α = (n – neq)/n. the standard gibbs energy of reaction for the decomposition h2o(g) → h¬2(g) + ½ o2(g) is +118.08 kj mol-1 at 2300 k. what is the degree of dissociation of h2o at 2300 k and 1.00 bar?