Write rate equations using experimentally determined orders.

In the subtopic Rate equations and orders (A-level only), this AQA A-Level Chemistry 7405 learning objective focuses on write rate equations using experimentally determined orders. It belongs to Rate equations (A-level only), so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include rate equation, order. Rate equation. means an expression that relates the rate of a reaction to the concentration of reactants, each raised to a power corresponding to their order in the reaction Avoid the mistake of students often confuse the order of reaction with the coefficients in the balanced equation when writing rate equations; instead, to write the correct rate equation, identify the order of each reactant based on experimental data, not the coefficients. For example, if the rate law is rate = k[A]^2[B]^1, this indicates that the reaction is second order with respect to A and first order with respect to B. Ensure to use the correct orders derived from initial rate data For exam answers, to write a rate equation, identify the rate-determining step and the orders of reaction from experimental data