Summary

• Description:

  The PDF document comprises Kapsabet High School Chemistry Paper 2 2025 Mock Exam with Marking Scheme.

  It is a KCSE Chemistry (Theory) Paper 2 (233/2) Post Mock 2025 examination.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 7 (Questions 1–7)
  • Marking Scheme: The marking scheme is in a different document.

  It covers the following topics:

  • Soapless detergents and organic chemistry applications (manufacture of detergents; esterification of carboxylic acids with alcohols)
  • Sulphur chemistry (structure and properties; reaction with hydrogen; Contact process steps and conditions; pollution control; vulcanization)
  • Electrochemistry (standard electrode potentials; cell combinations and representations; electrolysis of sulphuric acid and gas tests; Faraday calculations)
  • Inorganic/industrial chemistry experiments (reaction of dry hydrogen chloride gas with heated metals/metal oxides and related equations)
  • Halogens and redox reactions (preparation of chlorine and hydrogen chloride gases; bleaching agent formation and uses)
  • Stoichiometry and quantitative analysis (calculations involving magnesium chloride and silver nitrate)
  • Periodic table trends and bonding (families/groups, reactivity trends, atomic radius, oxide formula reasoning, ionic electronic configurations)
  • Preparation and properties of gases (laboratory preparation of nitrogen from air; density explanation; reducing gases for hot copper(II) oxide)
  • Equilibria and industrial processes (Haber process and effect of temperature on yield)
  • Metallurgy (extraction of zinc from zinc blende; roasting and reduction steps; condensation; related industry; uses of zinc)
  • Further mole and gas volume calculations (reactant in excess; volume of hydrogen sulphide at rtp)
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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