Summary

• Description:

  The MS Word document comprises Mmalina Trial 2 Chemistry Paper 1 2026 Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Chemistry 233/1 examination.

  This paper tests fundamental principles of chemistry across physical, inorganic, and organic chemistry, emphasizing quantitative analysis, chemical equilibria, reaction kinetics, and industrial chemical processes. Ideal for revision, this resource prepares learners for KCSE examinations through rigorous conceptual and computational questions.

  • Month Administered: July 2026
  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 27 (Questions 1 - 27)
  • Structure: Single section comprising 27 compulsory structured questions.

  It covers the following topics:

  • Electrochemistry: Cell notation, standard electrode potentials, feasibility of redox reactions, and quantitative electrolysis (Faraday's laws)
  • Chemical equilibria and reaction kinetics: Le Chatelier's principle in ammonia synthesis, reaction rate calculation, and energy reaction profiles
  • Solubility and salt analysis: Solubility curves, crystallization calculations, qualitative cation/anion identification, and salt preparation
  • Organic chemistry: Hydrocarbon explosion calculations, molar heat of combustion of ethanol, addition reactions, Perspex polymerization, and fermentation
  • Thermodynamics: States of matter energy changes, enthalpy of combustion, and bond energy calculations during hydrogenation
  • Gas chemistry and laboratory preparation: Preparation of dry oxygen, copper(II) oxide reduction, and preparation of sulphur(IV) oxide
  • Stoichiometry and mole concept: Molarity determinations, theoretical and percentage yield of aluminium chloride, and molar concentrations of mixed solutions
  • Periodic table and chemical bonding: Periodic trends, reactivity of non-metals, and relationship between structure and physical properties
  • Extraction of metals: Lead extraction from galena in the blast furnace
  • Radioactivity: Beta decay equations and stability of heavy isotopes
  • Applied chemistry: Hard and soft water, soap and soapless detergents
• File Size:

  1.91 MB
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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