Past Questions and Answers

Chemistry Waec Practical Questions And Answers

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Chemistry Waec Practical Questions And Answers

Here are 20 possible WAEC Chemistry practical questions that students might encounter:


Titration Experiment:


Determine the concentration of a given sodium hydroxide solution using a standard hydrochloric acid solution.



Investigate the heat of reaction between magnesium and hydrochloric acid.



Electrolyze a copper sulfate solution and analyze the products formed at the anode and cathode.

Gas Collection:


Collect and measure the volume of hydrogen gas evolved during the reaction of zinc with dilute sulfuric acid.

Preparation of a Salt:


Prepare pure, dry crystals of copper(II) sulfate.



Determine the concentration of a given potassium manganate(VII) solution by colorimetric analysis.

Qualitative Analysis:


Identify the cations present in a given mixture using qualitative analysis techniques.

Tests for Gases:


Perform tests to identify carbon dioxide, oxygen, and hydrogen gases.

Thermal Decomposition:


Investigate the thermal decomposition of a metal carbonate, e.g., copper(II) carbonate.

Rate of Reaction:


Study the effect of concentration on the rate of reaction between sodium thiosulfate and hydrochloric acid.

Identification of Anions:


Identify the anions present in a given salt mixture using appropriate tests.

Solubility Tests:


Determine the solubility of different salts in water and classify them as soluble or insoluble.

Volumetric Analysis:


Determine the percentage purity of a given sample of sodium carbonate by acid-base titration.

Enthalpy Change:


Investigate the enthalpy change during the reaction between sodium hydroxide solution and hydrochloric acid.

Hydrogen Peroxide Decomposition:


Study the decomposition of hydrogen peroxide using manganese(IV) oxide as a catalyst.

Tests for Functional Groups:


Identify the functional groups present in organic compounds through chemical tests.

Preparation of Oxygen:


Collect and test oxygen gas obtained from the decomposition of hydrogen peroxide.



Separate a mixture of common salts through the technique of crystallization.

Conductivity of Solutions:


Investigate the electrical conductivity of different aqueous solutions.

Redox Titration:


Determine the concentration of a given iron(II) sulfate solution using a standard potassium manganate(VII) solution.

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