Skip to content

Chemistry Help UKFree A-level chemistry practice

Home AQA OCR A Arcade Calculations Practical My Chemistry Virtual Chemistry

Search Chemistry Help

Find a topic, question set, tool or practical.

Search Chemistry Help

Try

Start typing to search the site.

↑↓ chooseEnter openEsc close

Moles questions›Limiting reagents

AQA · OCR A · Year 12+

Limiting reagent questions

Compare reacting amounts properly, calculate product and find reagent left in excess.

limiting reagentmoles ÷ coefficientexcess remaining

Fresh question

Practise limiting reagents

0correct first time0completed

Your exam board Only changes questions where supplied data or exam conventions differ. Difficulty

Good point to move on

You have covered this set securely.

Moving to the next linked skill is probably more useful than cycling through the same questions again.

Try the next skill

Want to save your progress?

Keep this practice with your My Chemistry specification tracker.

Open specification tracker

Choose a different moles skill

Related skills

Move to the calculation underneath the mistake

Mass, M_r & molesCore conversions Mole ratiosUse equation coefficients Gas volumesMolar volume and stoichiometry Titration practiceUse the same moles skills in volumetric analysis

Chemistry Help UK

Free A-level chemistry for AQA and OCR A.

A-level routes Chemistry Arcade Calculations Moles questions Titration questions Hess law questions NMR questions A-level Chemistry Head Start AQA Chemistry OCR A Chemistry Practical chemistry

More Study check Feedback and corrections Privacy and statistics

© 2026 Chemistry Help UKCreated and maintained by Dr T. SmithCheck your current specification where exam-board detail matters.SITE 2.02.0 · 23 Aug 2026