Rate equations (A-level)

• What happens to the rate if the order of reaction is 0?

  — a change in concentration of reactants has no effect on the rate of reaction
• what happens to the rate if the order of reaction is 1?

  — the change in concentration of reactants is seen by a proportional change in the rate of reaction
• what happens to the rate If the order of reaction is 2?

  — the change in concentration of reactants is seen by a change in the rate of reaction squared
• Define order

  the power to which the concentration of that reactant is raised to in the rate equation
• Define rate of reaction

  Change in concentration of reactants/products over time
• Define half life

  The time taken for the concentration to halve

  — calculate half lives to differentiate between first and second order -1st increases by the same but 2nd increases by increasing amounts
• Define reaction mechanism

  — a series of steps through which the reaction progresses

  — each step has a different rate of reaction

  — the slowest step will control the overall rate of reaction - the rate determining step