For the elementary reaction , which of the following expressions correctly defines the overall rate — Reaction Mechanism Chemistry Question

💡 Solution & Explanation

The rate of reaction is equated by dividing the rate of appearance/disappearance by the stoichiometric coefficients: $-\frac{1}{2}\frac{d[A]}{dt} = -\frac{d[B]}{dt} = +\frac{d[C]}{dt} = +\frac{1}{3}\frac{d[D]}{dt}$.