<Dl> <Dd> ln ⁡ r = ln ⁡ k + x ln ⁡ (A) + y ln ⁡ (B) +...(\ displaystyle \ ln r = \ ln k + x \ ln (A) + y \ ln (B) + ...) </Dd> </Dl> <Dd> ln ⁡ r = ln ⁡ k + x ln ⁡ (A) + y ln ⁡ (B) +...(\ displaystyle \ ln r = \ ln k + x \ ln (A) + y \ ln (B) + ...) </Dd> <P> For example, the initial rate can be measured in a series of experiments at different initial concentrations of reactant A with all other concentrations (B), (C),...kept constant, so that </P> <Dl> <Dd> ln ⁡ r = x ln ⁡ (A) + constant (\ displaystyle \ ln r = x \ ln (A) + (\ textrm (constant))) </Dd> </Dl>

Define the terms order of reaction and rate constant