Summary

• Description:

  The PDF document comprises THE SUPER LEAGUE JOINT NATIONAL MOCKS Chemistry Paper 3 2026 Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a KCSE Chemistry 233/3 examination.

  This practical examination tests candidates on laboratory precision, quantitative analysis, reaction kinetics, and qualitative inorganic and organic analysis. It is designed to evaluate experimental titrations, rate of reaction graphs, and systematic ion identification techniques.

  • Duration: 2 Hours 15 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1 to 3)
  • Structure: A three-question laboratory practical examination: Question 1 (Quantitative Analysis and Chemical Kinetics, 22 marks), Question 2 (Inorganic Qualitative Analysis, 8 marks), and Question 3 (Organic Qualitative Analysis, 10 marks).

  It covers the following topics:

  • Volumetric Analysis (Redox titration between acidified potassium manganate (VII) and an oxalic acid/sodium oxalate mixture to determine solubility and percentage purity)
  • Chemical Kinetics (Investigating the effect of temperature on the rate of reaction between acidified KMnO4 and oxalic acid, graphical plotting of reciprocal time 1/t against temperature)
  • Inorganic Qualitative Analysis (Systematic qualitative tests to detect cations and anions including selective precipitation with aqueous sodium hydroxide and ammonia, tests with barium nitrate and potassium iodide)
  • Organic Qualitative Analysis (Identification of organic functional groups using universal indicator paper, bromine water unsaturation tests, acidified KMnO4 redox testing, and sodium hydrogen carbonate effervescence testing for carboxylic acids)
• File Size:

  457.51 KB
• Length:

  8 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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