Gce Model Questions Vol1 2025 Chemistry Question 5

Practice essay / theory question 5 from the 2025 Gce Model Questions Vol1 Chemistry examination. This question covers Stoichiometry, Limiting reagent, Theoretical yield, Percent yield .

Gce Model Questions Vol1 2025 Chemistry Essay / Theory

Topics: Stoichiometry Limiting reagent Theoretical yield Percent yield

Question 5 GCE_MODEL_QUESTIONS_VOL1 • 2025 • CHEMISTRY • essay

A sample of aluminium metal weighing 4.50 g is reacted with an excess of aqueous copper(II) sulfate solution. The balanced chemical equation for the reaction is: 2 Al(s) + 3 CuSO₄(aq) → Al₂(SO₄)₃(aq) + 3 Cu(s)

Question Parts

( a )

Identify the limiting reagent and calculate the theoretical mass of copper that can be produced.

( b )

After filtration, 5.10 g of copper is recovered. Calculate the percentage yield of copper.

( c )

The recovered copper is subsequently dissolved in nitric acid and crystallised as copper(II) nitrate, giving 4.80 g of crystals. Discuss possible reasons for the loss in mass between the filtered copper and the final crystals.

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About This Question

This is Gce Model Questions Vol1 2025 Chemistry Question 5. It is one of the essay questions from the 2025 Gce Model Questions Vol1 Chemistry examination.

The question covers Stoichiometry, Limiting reagent, Theoretical yield, Percent yield .

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