Neco Model Questions Vol1 2021 Chemistry Question 5

Practice essay / theory question 5 from the 2021 Neco Model Questions Vol1 Chemistry examination. This question covers Stoichiometry .

Neco Model Questions Vol1 2021 Chemistry Essay / Theory

Topic: Stoichiometry

Question 5 NECO_MODEL_QUESTIONS_VOL1 • 2021 • CHEMISTRY • essay

A laboratory experiment involves the reaction: 2 Al (s) + 3 CuSO₄ (aq) → Al₂(SO₄)₃ (aq) + 3 Cu (s) A student weighs 15.0 g of aluminium and 30.0 g of copper(II) sulphate (anhydrous) and carries out the reaction. After completion, the copper obtained is dried and weighed, giving an actual mass of 5.0 g. Answer the following:

Question Parts

( a )

Identify the limiting reagent and show the calculations used to reach the conclusion.

( b )

Calculate the theoretical mass of copper that could be produced from the quantities of reactants used.

( c )

Determine the percent yield of copper obtained and calculate the mass of aluminium that remains unreacted after the reaction is complete.

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About This Question

This is Neco Model Questions Vol1 2021 Chemistry Question 5. It is one of the essay questions from the 2021 Neco Model Questions Vol1 Chemistry examination.

The question covers Stoichiometry .

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