Summary

• Description:

  The MS Word document comprises KCSE 2026 Chemistry Paper 3 Prediction Paper with Answers (Set 1). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Chemistry Paper 3 prediction examination designed to prepare candidates for the national assessment.

  This practical paper rigorously tests candidates' quantitative titration skills, thermochemical enthalpy determinations, qualitative inorganic analysis, and organic functional group testing.

  • Duration: 2 Hours 15 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1 - 3)
  • Structure: Three compulsory laboratory practical experiments covering thermochemistry, acid-base volumetric analysis, and qualitative analysis.

  It covers the following topics:

  • Thermochemistry and Calorimetry (Procedure 1: Dissolution of anhydrous sodium carbonate, temperature change measurement, enthalpy change of solution calculation)
  • Volumetric Analysis and Acid-Base Titration (Procedure 2: Standardizing sodium carbonate solution with hydrochloric acid, mole ratios, molar heat of solution computation)
  • Qualitative Inorganic Analysis (Solid D1: Solubility testing, cation precipitation with aqueous sodium hydroxide and aqueous ammonia, sulphate/nitrate testing with barium nitrate and nitric (V) acid, Devarda's alloy nitrate test, thermal decomposition gas tests)
  • Qualitative Organic Analysis (Solid M1: Combustion on a spatula to test for unsaturation/sootiness, solubility in water, bromine water addition test for alkenes/alkynes, sodium carbonate effervescence test for carboxylic acids, acidified potassium dichromate (VI) oxidation test for primary/secondary alcohols)
• File Size:

  32.67 KB
• Length:

  6 pages
• Category:

  KCSE Prediction Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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