Question

The rate of a chemical reaction depends on the concentrations ofthe reactants. For the general reaction between Aand B,

aA+bB?cC+dD

The dependence of the reaction rate on the concentration of eachreactant is given by the equation called the rate law:

rate=k[A]m[B]n

where k is a proportionality constant called the rateconstant. The exponent m determines the reaction orderwith respect to A, and n determines the reaction orderwith respect to B. The overall reaction order equals the sum of theexponents (m+n).

For the reaction A+B+C?D+E, the initial reaction rate wasmeasured for various initial concentrations of reactants. Thefollowing data were collected:

Trial	[A] (M)	[B] (M)	[C] (M)	Initial rate (M/s)
1	0.40	0.40	0.40	1.2