Summary

• Description:

  The MS Word document comprises Nakuru North Joint Mock 2024 Chemistry Paper 3 Exam with Answers and Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It is a KCSE Chemistry Paper 3 (233/3) Practical Joint Mock Examination that was administered in July/August 2024 for schools in Nakuru North Sub-County.

  • Duration: 2¼ Hours
  • Total Marks: 40
  • Number of Questions: 3
  • Marking Scheme: The marking scheme is in a different document.

  The paper required candidates to answer all questions and involved laboratory experiments, titration calculations, calorimetry, qualitative analysis, and interpretation of experimental results.

  It covered the following topics:

  • Acid–base titration and standardization of hydrochloric acid using sodium carbonate solution
  • Use of indicators such as phenolphthalein and methyl orange during titration
  • Calculation of average titres, number of moles, and molarity of an acid solution
  • Writing balanced chemical equations for neutralization reactions
  • Determination of heat of neutralization using calorimetry
  • Measurement and recording of temperature changes during acid–base reactions
  • Plotting and interpretation of graphs of temperature rise against volume of acid added
  • Calculation of molar heat of neutralization from experimental data
  • Qualitative analysis of inorganic salts
  • Identification of lead (II) nitrate using sodium hydroxide, potassium iodide, and confirmatory tests
  • Observation and inference techniques in chemical analysis
  • Testing unknown solids through reactions with water, indicators, and oxidizing agents
  • Use of reagents such as universal indicator, acidified potassium manganate (VII), and bromine water
  • Interpretation of chemical observations to identify properties of unknown substances
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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