Time Learning activity with Assessment Learning outcome Resources Learning objective taken opportunity to develop skills opportunities 3.1.9 3.5 Define the terms order of Students use initial rate data to June 2006 Iodine clock reaction: Rate equations. weeks reaction and rate constant. deduce the order of reaction and Unit 4 Q5 Demo: derive the rate equation. Video: 3.1.9.1 Perform calculations June 2003 Rate equations. the rate equation. Students calculate the rate constant Unit 4 Q1 from data for a zero order reaction. Activation energy and Arrhenius Know and understand: Explain the qualitative June 2013 equation: The rate equation is of effect of changes in Students calculate rates from Unit 4 Q1 the form temperature on the rate concentration-time graphs by Rate = k[A]m [B]n constant k drawing tangents. January 2013 Unit 4 Q1 Use concentration–time Students use data to deduce the 3.1.9.2 Determination. graphs to deduce the rate rate-determining step. January 2011 Rate equations are of a reaction. Unit 4 Q1 determined by Students use data to deduce the experiment and give us Use initial activation energy using the January 2010 information about the data to deduce the Arrhenius equation and a suitable Unit 4 Q3 reaction steps and the initial rate of a reaction. graph. rate-determining step. January 2006 Use rate–concentration Practical activities: Unit 4 Q1 Rate can be determined data or graphs to deduce Iodine clock (KI and H2O2): initial using the order (0, 1 or 2) with rate. January 2003 graphs. respect to a reactant. Unit 4 Q1 Iodine/propanone/acid reaction: Rate-concentration Derive the rate equation for initial rate and continuous graphs can be used to a reaction from the orders monitoring using a colorimeter.
Learning objective Time taken Learning outcome Learning activity with opportunity to develop skills Assessment opportunities Resources 3.1.9 Rate equations. 3.1.9.1 Rate equations. Know and understand: The rate equation is of the form Rate = k[A]m [B]n 3.1.9.2 Determination. Rate equations are determined by experiment and give us information about the reaction steps and the rate-determining step. Rate can be determined using graphs. Rate-concentration graphs can be used to 3.5 weeks Define the terms order of reaction and rate constant. Perform calculations the rate equation. Explain the qualitative effect of changes in temperature on the rate constant k Use concentration–time graphs to deduce the rate of a reaction. Use initial data to deduce the initial rate of a reaction. Use rate–concentration data or graphs to deduce the order (0, 1 or 2) with respect to a reactant. Derive the rate equation for a reaction from the orders Students use initial rate data to deduce the order of reaction and derive the rate equation. Students calculate the rate constant from data for a zero order reaction. Students calculate rates from concentration-time graphs by drawing tangents. Students use data to deduce the rate-determining step. Students use data to deduce the activation energy using the Arrhenius equation and a suitable graph. Practical activities: Iodine clock (KI and H2O2): initial rate. Iodine/propanone/acid reaction: initial rate and continuous monitoring using a colorimeter. June 2006 Unit 4 Q5 June 2003 Unit 4 Q1 June 2013 Unit 4 Q1 January 2013 Unit 4 Q1 January 2011 Unit 4 Q1 January 2010 Unit 4 Q3 January 2006 Unit 4 Q1 January 2003 Unit 4 Q1 Iodine clock reaction: Demo: Video: Activation energy and Arrhenius equation:
AQA-7405-B-SOW.DOCX