Summary

• Description:

  The MS Word document comprises MASENO SCHOOL Chemistry Paper 2 2026 Mock Exam with Answers (Marking Scheme). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Form 4 Chemistry Paper 2 theory examination.

  This paper assesses advanced analytical mastery in periodic trends, Hess's law thermochemistry, industrial extraction of metals, electrochemistry, and organic reaction mechanisms.

  • Total Marks: 80 marks
  • Number of Questions: 7 questions (Questions 1 – 7)
  • Structure: Seven compulsory extended structured questions covering core theoretical units

  It covers the following topics:

  • Question 1: Periodic table trends, group chemistry (halogens and alkaline earth metals), dot-and-cross diagrams, atomic and ionic radii, ionization energy, and halogen boiling point trends
  • Question 2: Thermochemistry; heating value of propane, enthalpy of combustion of ethyne via Hess's law, lattice and hydration enthalpies, molar heat of solution, and energy level diagrams
  • Question 3: Industrial nitrogen chemistry; preparation of dinitrogen oxide, reaction of burning magnesium in nitrogen oxides, uses of nitric(V) acid, and industrial stoichiometry of ammonium nitrate
  • Question 4: Solubility curves; solubility calculations of potassium chlorate, temperature-solubility curve plotting, fractional crystallization, and industrial applications
  • Question 5: Electrochemistry; standard reduction potentials, reference electrode conventions, electrochemical cell diagrams, and quantitative Faraday electroplating of gold
  • Question 6: Metallurgy of iron; blast furnace operation, charge mixture functions, zone thermochemical reactions, tuyeres, comparison of cast and wrought iron, and radioisotope decay of Iron-60
  • Question 7: Organic chemistry and polymers; structural isomers of butyne, condensation polymerization of Nylon 6,6, environmental impacts of chlorofluorocarbons (CFCs), organic synthetic flowcharts, and chemical tests distinguishing primary alcohols from carboxylic acids
• File Size:

  218.69 KB
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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