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Edexcel A-Level Chemistry AS 9.4 Qualitatively in Terms of the Maxwell Boltzmann Distribution of Molecular Energies How Changes in Temperature Affect Questions

Practise Edexcel IAL Chemistry 9.4 by sketching temperature distributions, explaining successful collisions and separating modal or mean energy from fixed activation energy.

Syllabus
First assessment 2019
Course
Chemistry YCH11
Level
AS

Exam points

  • Sketch a hotter distribution with a lower right-shifted peak and unchanged total area.
  • Explain faster rate through a larger fraction with energy at least Eₐ and more successes.
  • Distinguish rising modal and mean energies from activation energy, which stays fixed.

Edexcel A-Level Chemistry AS 9.4 Qualitatively in Terms of the Maxwell Boltzmann Distribution of Molecular Energies How Changes in Temperature Affect Questions question 1

[Maximum number: 1]

A Maxwell-Boltzmann distribution curve for the particles present in a reaction mixture is shown. Number of particles with energy, E

Figure for Question Edexcel A-Level Chemistry AS 9.4 Qualitatively in Terms of the Maxwell Boltzmann Distribution of Molecular Energies How Changes in Temperature Affect Questions question 1 — Edexcel A-Level Chemistry AS

What happens to the distribution curve when the temperature of the gas is decreased?
□ A
□ B
□ C
□ D

Table for Question Edexcel A-Level Chemistry AS 9.4 Qualitatively in Terms of the Maxwell Boltzmann Distribution of Molecular Energies How Changes in Temperature Affect Questions question 1 — Edexcel A-Level Chemistry AS
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