Summary

• Description:

  The PDF document comprises Catholic Diocese of Kakamega Evaluation Test Chemistry Paper 3 2026 Pre-Mock Exam with Marking Scheme. The marking scheme is in a different document.

  It was a KCSE Chemistry Paper 3 examination.

  This hands-on practical paper tests critical laboratory skills in volumetric titration, thermochemical curve analysis, and qualitative analysis of both inorganic salts and organic compounds.

  • Month Administered: July/August 2026
  • Duration: 2 Hours 15 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1 - 3)
  • Structure: Three compulsory laboratory experimental questions

  It covers the following topics:

  • Quantitative analysis (Procedure I): acid-base titration of dilute hydrochloric acid against standard sodium hydroxide for molarity determination
  • Thermochemistry (Procedure II): thermometric titration, maximum temperature curve plotting, temperature change determination, and molar enthalpy of neutralization calculation
  • Inorganic qualitative analysis: systematic cation and anion identification for solid G using aqueous ammonia, sodium hydroxide, dilute hydrochloric acid, lead(II) nitrate, and barium nitrate
  • Organic qualitative analysis: testing solid H for unsaturation and functional groups using ignition, sodium hydrogen carbonate effervescence, acidified potassium manganate(VII), and esterification
• File Size:

  3.22 MB
• Length:

  8 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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