3.1.9.1 Rate equations Time Learning activity with opportunity to Assessment Learning Outcome Resources Learning objective taken develop skills opportunities Understand rate equations 0.5 Calculations in AS / A Describe how changes in June 2006 Unit 4 Students should be able to: and order of reaction. weeks concentration will affect reaction Question 5a and 5b Chemistry (Clark) define the terms order of given the rate equation (AO2 - Apply (QS06.4.05) ISBN 9780582411272 reaction and rate constant knowledge and understanding). Deduce order of reaction, June 2003 Unit 4 describe how changing Use rate equations to determine Question 1 rate equations and rate Chemistry Review article: concentration of a reagent reaction rates or rate constants (with (QS03.4.01) constants from rate data. Establishing a rate affects the rate when the units) using initial rate data (AO2 - with respect that equation (Volume 14, Apply knowledge and understanding; reagent is 0, 1 or 2 Describe how the rate edition 2) MS0.0 - Recognise and make use of constant changes with determine the values and appropriate units in calculation; units for rate constants temperature. Many suitable calculations MS2.3 substitute numerical values – given appropriate data can be found at and into algebraic equations; MS2.4 - describe how rate Solve algebraic equations). Use the Arrhenius constants change with equation. Advanced Practical Students use a graph of temperature concentration–time and calculate the Chemistry (ILPAC) perform calculations rate constant of a zero-order reaction ISBN 0719575079 the Arrhenius equation by determination of the gradient. (AO2 - Apply knowledge and plot straight line graphs of understanding; MS3.3 Determine - ln k versus 1/T to the slope of a linear graph; MS3.4 - determine the activation Calculate rate of change from a energy of a reaction. graph showing a linear relationship). Students can measure the activation energy for the catalysed and uncatalysed reaction of iodine with peroxodisulphate(VI) ions by experiment and plotting graphs (AO2 - Apply knowledge and
3.1.9.1 Rate equations Learning objective Time taken Learning Outcome Learning activity with opportunity to develop skills Assessment opportunities Resources Understand rate equations and order of reaction. Deduce order of reaction, rate equations and rate constants from rate data. Describe how the rate constant changes with temperature. Use the Arrhenius equation. 0.5 weeks Students should be able to: define the terms order of reaction and rate constant describe how changing concentration of a reagent affects the rate when the with respect that reagent is 0, 1 or 2 determine the values and units for rate constants given appropriate data describe how rate constants change with temperature perform calculations the Arrhenius equation plot straight line graphs of ln k versus 1/T to determine the activation energy of a reaction. Describe how changes in concentration will affect reaction given the rate equation (AO2 - Apply knowledge and understanding). Use rate equations to determine reaction rates or rate constants (with units) using initial rate data (AO2 - Apply knowledge and understanding; MS0.0 - Recognise and make use of appropriate units in calculation; MS2.3 – substitute numerical values into algebraic equations; MS2.4 - Solve algebraic equations). Students use a graph of concentration–time and calculate the rate constant of a zero-order reaction by determination of the gradient. (AO2 - Apply knowledge and understanding; MS3.3 - Determine the slope of a linear graph; MS3.4 - Calculate rate of change from a graph showing a linear relationship). Students can measure the activation energy for the catalysed and uncatalysed reaction of iodine with peroxodisulphate(VI) ions by experiment and plotting graphs (AO2 - Apply knowledge and June 2006 Unit 4 Question 5a and 5b (QS06.4.05) June 2003 Unit 4 Question 1 (QS03.4.01) Calculations in AS / A Chemistry (Clark) ISBN 9780582411272 Chemistry Review article: Establishing a rate equation (Volume 14, edition 2) Many suitable calculations can be found at and Advanced Practical Chemistry (ILPAC) ISBN 0719575079
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