Kinetics AQA 3.0 / 5 based on 3 ratings ? ChemistryReactionsA2/A-levelAQA Created by: Victoria FryCreated on: 28-03-14 13:04 What is kinetics? Study of reaction rates 1 of 16 The definition of 'rate of reaction'? The rate of change of concentration of reactants or products 2 of 16 What is the rate equation? r = k[A][B] 3 of 16 What can initial rates be used for? To determine the order with respect to a reactant 4 of 16 How do you calculate the total order of a reaction? Add all the individual orders together (0,1 or 2) 5 of 16 What are the possible reaction orders? 0, 1 or 2 6 of 16 What does order 0 mean in respect to the effect on rate? Changing the concentration has no effect on the rate -> r=k 7 of 16 What does order 1 mean in respect to the effect on rate? Doubling the concentration, doubles the initial rate/proportion to concentration -> r=k[A]1 8 of 16 What does order 2 mean in respect to the effect on rate? Doubling the concentration, increases initital rate by a factor of four/[A] squared -> r=k[A]2 9 of 16 What do the units of 'k' depend on? The overall order of the reaction 10 of 16 If temperature increases, what is the effect on 'k'? 'k' increases 11 of 16 What are the units of 'k' for 1st order? s-1 12 of 16 What are the units of 'k' for 2nd order? mol-1dm3s-1 13 of 16 What are the units of 'k' for 3rd order? mol-2dm6s-1 14 of 16 What is the equation used to figure out 'k'? rate divided by [A]x[B] 15 of 16 What is the rate determing step? The slowest step 16 of 16

## Comments

No comments have yet been made