Summary

• Description:

  The PDF document comprises SUKELLEMO JOINT PREMOCK 1 Chemistry Paper 3 2024 Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a KCSE Chemistry 233/3 examination.

  This practical paper evaluates essential experimental competencies, quantitative volumetric titration skills, temperature-dependent solubility graphing, and systematic qualitative inorganic and organic analysis. It prepares candidates for practical laboratory rigor and accurate observation-inference deductions required in KCSE Paper 3.

  • Duration: 2 Hours 15 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1 - 3)
  • Structure: The paper contains three compulsory practical questions: Question 1 (22 marks) covering solubility determinations, graph plotting, and redox titration; Question 2 (9 marks) focusing on inorganic qualitative analysis; and Question 3 (9 marks) evaluating organic qualitative analysis and functional group identification.

  It covers the following topics:

  • Physical chemistry: determination of solubility of a solid at varied crystallization temperatures and solubility curve plotting
  • Quantitative redox titrimetry: standardizing acidified potassium manganate(VII), calculating relative formula mass, and finding water of crystallization
  • Inorganic qualitative analysis: testing solid salts for cation and anion constituents using heating, solubility, barium nitrate, and sodium hydroxide reagents
  • Organic qualitative analysis: testing for unsaturation, acidity, and functional groups using sodium carbonate, bromine water, and acidified potassium dichromate(VI)
• File Size:

  245.70 KB
• Length:

  7 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.