Summary

• Description:

  The MS Word document comprises Kimaeti Sub-County Muslim Schools Joint 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 KCSE Chemistry 233/3 practical mock examination.

  This practical examination assesses candidates' laboratory proficiency in reaction kinetics, volumetric titration analysis, and systematic qualitative inorganic and organic analysis. It tests data collection, rate-temperature graphing, stoichiometric calculations, and chemical identification.

  • Duration: 2 ½ Hours
  • Total Marks: 40 marks
  • Number of Questions: 3 questions (Questions 1 to 3)
  • Structure: Consists of three compulsory practical questions: Question 1 (22 marks) covering reaction kinetics and acid-base titration; Question 2 (11 marks) covering inorganic qualitative analysis; Question 3 (7 marks) covering organic functional group identification.

  It covers the following topics:

  • Chemical kinetics: Investigating the effect of temperature on the rate of reaction between sodium thiosulphate and hydrochloric acid, rate-temperature graph plotting, and rate reciprocal calculations
  • Volumetric analysis (Titration): Dilution of standard hydrochloric acid, neutralization titration with an alkali, calculating reacting mole ratios, and writing net ionic equations
  • Inorganic qualitative analysis: Systematic cation and anion tests on solid R involving aqueous sodium hydroxide, aqueous ammonia, barium chloride, lead (II) nitrate, and acidified potassium manganate (VII)
  • Organic qualitative analysis: Identification of functional groups and degree of unsaturation in solid V using acidified potassium manganate (VII), bromine water, sodium carbonate effervescence tests, and universal indicator pH testing
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY
• Posted By:

  Caleb_Peter

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