Last updated on Oct 23, 2026

Limiting Reactants (OCR GCSE Chemistry A (Gateway Science Suite)): Quizzes

📚Quizzes

Revision Notes Model Answers Quizzes Flashcards Exam Questions

Limiting Reactants

Sign up to keep practising.Create a free account to play more quizzes and track your progress.

Practise the questions

12 questions from this quiz

Show

What is the limiting reactant in a chemical reaction?

The reactant used up first

What happens when the limiting reactant is used up?

The reaction stops

How many moles of $CuO$ are in $7.95$ g? ( $Mr$ of $CuO = 79.5$ )

$0.1$ moles

How many moles of $C$ are in $7.2$ g? ( $Ar$ of $C = 12$ )

$0.6$ moles

In the reaction of $0.1$ moles $CuO$ with $0.6$ moles $C$ (ratio $2:1$ ), which is limiting?

$CuO$

How many moles of $C$ are needed to react with $0.1$ moles of $CuO$ in a $2:1$ ratio?

$0.05$ moles

How many moles of $Cu$ are produced from $0.1$ moles of $CuO$ (limiting reactant)?

$0.1$ moles

How many moles of $CO_2$ are produced from $0.1$ moles of $CuO$ (limiting reactant)?

$0.05$ moles

What mass of $Cu$ is produced from $0.1$ moles? ( $Ar$ of $Cu = 63.5$ )

$6.35$ g

What mass of $CO_2$ is produced from $0.05$ moles? ( $Mr$ of $CO_2 = 44$ )

$2.2$ g

What ratio do $CuO$ and $C$ react in according to the balanced equation?

$2:1$

When $CuO$ is the limiting reactant, what happens to the excess $C$ ?

It remains available

Explore OCR GCSE Chemistry A (Gateway Science Suite) Revision Notes by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore OCR GCSE Chemistry A (Gateway Science Suite) Model Answers by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore OCR GCSE Chemistry A (Gateway Science Suite) Flashcards by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore OCR GCSE Chemistry A (Gateway Science Suite) Exam Questions by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Join 100,000+ GCSE students studying Quizzes with us.

Select your subjects, and get access to A+ resources today.