Summary

• Description:

  The MS Word document comprises the Form 4 Chemistry Paper 3 End Term 2 2025 Exam with Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  This practical exam paper contains three compulsory questions that assess different laboratory skills. The paper is marked out of a total of 40 marks, and the time allocated for completion is 2 hours and 15 minutes.

  The practical tasks cover the following key areas:

  • Quantitative Analysis: This question involves two parts:
    • Thermochemistry: Determining the molar enthalpy of a solution by measuring temperature changes and plotting a graph to find the temperature difference (ΔT).
    • Volumetric Analysis: Performing a redox titration with acidified potassium manganate (VII) to calculate the number of moles of water of crystallization in a hydrated salt.
  • Qualitative Analysis (Inorganic): A series of tests on an unknown solid (M) to identify its constituent cation and anion using reagents like aqueous ammonia, sodium hydroxide, and various salt solutions.
  • Qualitative Analysis (Organic): A series of tests on an unknown organic solid (P) to identify its functional group(s) through combustion and reactions with reagents like sodium hydrogen carbonate and acidified potassium dichromate(VI).
• File Size:

  568.09 KB
• Length:

  6 pages
• Category:

  Exams
• Level:

  Form 4
• Subject:

  CHEMISTRY
• Posted By:

  Caleb_Peter

Enter your details below to initiate a payment using MPESA.