Work through the list without notes. If you cannot do a statement, follow its link, then come back. Guide = study guide; Practice = practice questions.
Understanding
- I can describe how spectrophotometry, gas measurements, conductivity or sampling can follow a reaction over time. (Guide: “Watching a reaction as it happens”)
- I can explain why absorbance data can stand in for concentration data. (Practice Q6)
- I can write a rate law and name the order for each reactant and the overall order. (Guide: “The rate law”; Practice Q4)
- I can explain why orders must come from experiment rather than from coefficients. (Guide: Worked example 1; Practice Q7)
- I can explain why k depends on temperature but not on concentration. (Guide: “The rate constant, k”; Practice Q3)
Calculation
- I can predict the change in rate when one or more concentrations are multiplied by a factor. (Guide: “What each order means”; Practice Q1, Q5)
- I can work out the units of k from the overall order. (Practice Q2)
- I can find each order from a pair of experiments in which only one concentration changes. (Guide: Worked example 1; Practice Q4)
- I can find an order when two concentrations change at once, by removing the known effect first. (Guide: Worked example 2; Practice Q7)
- I can calculate k with units, and use a rate law to find a rate or a concentration. (Practice Q4, Q5, Q6)
Reasoning
- I can use data to show that a rate law based on coefficients is wrong. (Practice Q7)
- I can evaluate a claim that k changed, using the data and the temperature. (Practice Q6)
All ticked? Move on to Topic 5.3, Concentration Changes Over Time, or return to the course roadmap.