ConceptConceptDocsDocuments

IB Chemistry HL 2.2.2 Collision theory Question Bank

Practise IB Chemistry HL 2.2.2 by applying collision theory to exam-style questions.

Syllabus
First assessment 2025
Course
Chemistry HL
Level
HL

Exam points

  • identify the relevant chemical structure, process or evidence
  • apply the correct chemical model or equation
  • evaluate the result using chemical reasoning and data

2.2.2—Collision theory question 1

[Maximum number: 2]

Sulfur trioxide is an important compound in industry.

SO3( g)\quad \mathrm{SO}_{3}(\mathrm{~g}) is made using the contact process.

2SO2( g)+O2( g)⇌2SO3( g)ΔH⊖<02 \mathrm{SO}_{2}(\mathrm{~g})+\mathrm{O}_{2}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{SO}_{3}(\mathrm{~g}) \quad \Delta H^{\ominus}<0

Explain why increasing the temperature increases the rate of reaction.

All question bank results loaded