Last updated on Sep 22, 2026

Limiting Reactants (AQA GCSE Chemistry): Quizzes

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Limiting Reactants

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What is a limiting reactant?

Substance used up first in a reaction

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

What is the mole ratio of $CuO$ to $C$ in the balanced equation?

2:1

How many moles of $C$ are needed to react with 0.1 moles of $CuO$ ?

0.05 moles

In the reaction, which substance is the limiting reactant?

$CuO$

How many moles of $Cu$ are produced from 0.1 moles of $CuO$ ?

0.1 moles

How many moles of $CO_2$ are produced from 0.1 moles of $CuO$ ?

0.05 moles

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

6.35 g

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

2.2 g

Explore AQA GCSE Chemistry Revision Notes by Topics

Measurement, Mass & Equations

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Explore AQA GCSE Chemistry Model Answers by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore AQA GCSE Chemistry Flashcards by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

Explore AQA GCSE Chemistry Exam Questions by Topics

Measurement, Mass & Equations

Calculating Mass of Substances

Yield & Atom Economy

Concentration of Solutions

Amount of Substance & Gas Volume

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