Summary

• Description:

  The MS Word document comprises BRISTAR JOINT MOCK Chemistry Paper 3 2026 Mock Exam with Answers (Marking Scheme). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a Chemistry Paper 3 practical examination that assessed candidates' ability to perform chemical experiments, record observations, draw valid inferences, carry out quantitative analysis, and interpret experimental data. The paper focused on titration, reaction rates, qualitative analysis of inorganic salts, and identification of an organic compound.

  • Month Administered: July 2026
  • Duration: 2½ hours
  • Total Marks: 40
  • Number of Questions: 3
  • Structure: Question 1 carried 22 marks, Question 2 carried 11 marks, and Question 3 carried 7 marks.

  It covers the following topics:

  • Question 1: Volumetric Analysis and Rate of Reaction
    • Titration of ammonium iron (II) sulphate with acidified potassium manganate (VII)
    • Calculation of average titre and moles of solution used
    • Determination of concentration
    • Mole ratios in redox reactions
    • Reaction between oxalic acid and acidified potassium manganate (VII)
    • Effect of temperature on reaction rate
    • Calculation and interpretation of reciprocal time
    • Plotting and interpreting a rate-temperature graph
  • Question 2: Qualitative Analysis of Inorganic Salts
    • Solubility and separation of a mixture of salts
    • Tests using sodium hydroxide solution
    • Flame tests using a nichrome wire
    • Tests for ions using barium nitrate
    • Tests using acidified potassium manganate (VII)
    • Reaction of residues with dilute nitric (V) acid
    • Identification of ions using ammonia solution
    • Recording observations and making inferences
  • Question 3: Qualitative Analysis of an Organic Compound
    • Combustion test of an organic compound
    • Solubility and pH determination
    • Reaction with sodium hydrogen carbonate
    • Test using acidified potassium manganate (VII)
    • Recording experimental observations and drawing inferences
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY
• Posted By:

  Caleb_Peter

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