Skip to main content
A-LevelChemistryEquilibria9701/12 · May/June 2021 · Q101 Mark

3.60 moles of hydrogen gas and 2.00 moles of iodine vapour are placed in a reaction vessel which is then sealed and maintained at a constant temperature. The equation for the reaction is shown. H₂ + I₂ ⇌ 2HI At equilibrium, 3.20 moles of hydrogen remain. All reactants and products are gaseous. What is the value of Kp under these conditions?

A0.0313
B0.125
C0.156
D8.00

✓ Correct answer

B: 0.125

Practise more questions on this topic

Oracle Prep sorts past-paper questions by topic, so you can drill Equilibria and see which topics are most likely to come up next.

Sign up free →

About this question

Topic
Equilibria, A-Level Chemistry (syllabus 9701). Multiple choice, 1 mark.
Source
A-Level Chemistry, May/June 2021 Paper 1 Variant 2, question 10.

Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content

Related Chemistry questions

© 2026 Oracle Prep