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8.2 Effect of temperature on reaction rates and the concept of activation energy · Fathom

Subjects
Chemistry
8.2 Effect of temperature on reaction rates and the concept of activation energy

8 Reaction kineticsAS Level

8.2 Effect of temperature on reaction rates and the concept of activation energy

3 of 3 objectives have lessons · 0 studied · 0 secure

Lessons

Activation energy and the Boltzmann distributionWhy only a small fraction of molecules can react, and how the Boltzmann curve shows that fraction. 6 min, not started
How temperature changes the rateTwo effects at once — more frequent collisions and a much larger fraction with enough energy — and why the second dominates. 6 min, not started
Temperature, activation energy and Boltzmann distributionsUse activation energy and Boltzmann distributions to explain why heating a reaction makes effective collisions more frequent. 6 min, not started

Syllabus objectives

3 objectives

What Cambridge says you should be able to do, in our words. Codes are the topic number plus the objective’s position.

8.2.1

Define activation energy, EA, as the minimum energy required for a collision to be effective.

Taught in: Activation energy and the Boltzmann distribution, Temperature, activation energy and Boltzmann distributions · 3 questions

8.2.2

Sketch and use the Boltzmann distribution to explain the significance of activation energy.

Taught in: Activation energy and the Boltzmann distribution, Temperature, activation energy and Boltzmann distributions · 7 questions

8.2.3

Explain qualitatively, in terms of both the Boltzmann distribution and the frequency of effective collisions, the effect of a temperature change on the rate of a reaction.

Taught in: Temperature, activation energy and Boltzmann distributions, How temperature changes the rate · 10 questions