Reaction Rate and Concentration (4)
For reactions of the form ?A + ?B ?products, where ? and ? are stoichiometric coefficients, the rate of the reaction is
Rate = k [A]A order[B]B order
To do the initial rate experiment with this situation hold B constant while experimenting using changing A concentrations, and hold A constant while experimenting changing B concentrations (so that the concentration being held constant (raised to an appropriate power) cancels).