Summary

• Description:

  The MS Word document comprises Muslim Schools Joint Evaluation Test (MUSJET) Chemistry Paper 2 2025 Mock Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It is a Kenya Certificate of Secondary Education (K.C.S.E.) Chemistry Paper 2 (233/2) Mock Examination (July 2025).

  • 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:

  • Periodic table trends in Group VII (halogens): melting/boiling points, reactivity trends, atomic vs ionic radius, and bonding/structure in halogen molecules
  • Halogen reactions (e.g., reaction of a halogen with water) and dot-and-cross structures
  • Water treatment: hard water, ion-exchange resins, and deionised water (including ionic equations)
  • Qualitative analysis and inorganic reactions: precipitation, ionic equations, solubility in excess reagents, and complex ion formation
  • Preparation of salts (e.g., preparing copper(II) carbonate from copper metal)
  • Organic chemistry: hydrogenation of alkenes (conditions and economic application) and incomplete combustion of alkynes (products and observations)
  • Polymers: natural polymers and advantages of synthetic polymers
  • Rates of reaction: collision theory, effects of concentration and pressure, and rate calculations from experimental data/graphs
  • Chemical equilibrium: dynamic equilibrium and Le Chatelier’s principle (e.g., N₂O₄/NO₂ system)
  • Redox chemistry: oxidation numbers and interpreting electrode potentials (oxidising agents, cell combinations, and cell emf)
  • Electrolysis: dilute sulphuric(VI) acid set-up (electrodes, gases, anode equation) and electrolysis calculations (Faraday’s laws)
  • Industrial chemistry flow-chart interpretation: sources of gases, catalysts used in steps, process names, products formed, and applications
  • Energetics: bond energy calculations, heats of formation, Hess’ law cycle calculations, heating value of fuels, and molar heat of combustion experiment (ethanol)
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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