Summary

• Description:

  The MS Word document comprises KCSE 2026 Chemistry Paper 3 Prediction Paper with Answers (Set 2). 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.

  A rigorous practical examination testing experimental precision, titrimetric analysis, reaction thermochemistry, and systematic qualitative inorganic and organic analysis. It focuses on laboratory procedural accuracy, graphical interpretation of neutralization peaks, and ionic identification.

  • Duration: 2 Hours 15 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1 – 3)

  It covers the following topics:

  • Quantitative Volumetric Analysis:
    • Dilution of Concentrated Sodium Hydroxide Stock Solution
    • Acid-Base Neutralization Titration Using Phenolphthalein Indicator
    • Stoichiometric Calculations: Moles Reacted, Molar Concentration, and Relative Formula Mass (RFM) of Mineral Acid
  • Thermochemistry:
    • Thermometric Titration: Measuring Stepwise Temperature Changes in Neutralization
    • Graphical Analysis: Temperature versus Volume Neutralization Curve Plotting
    • Calculation of Molar Enthalpy Change of Neutralization
  • Qualitative Inorganic Analysis:
    • Thermal Decomposition and Action of Heat on Hydrated Salts
    • Precipitation Reactions: Stepwise Addition of Sodium Hydroxide and Aqueous Ammonia
    • Redox Testing with Hydrogen Peroxide
    • Confirmatory Anion Tests Using Acidified Lead (II) Nitrate and Barium Nitrate Solutions
  • Qualitative Organic Analysis:
    • Solubility and Miscibility of Organic Liquid in Water
    • Testing for Carboxylic/Acidic Functional Groups Using Solid Sodium Hydrogen Carbonate
    • Oxidation Testing with Acidified Potassium Dichromate (VI) for Alcohols
• File Size:

  158.00 KB
• Length:

  7 pages
• Category:

  KCSE Prediction Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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