Summary

• Description:

  The PDF document comprises STAREHE GIRLS' CENTRE Chemistry Paper 3 Pre Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a Pre-mock Chemistry Paper 3 (Practical) examination.

  This practical examination tests quantitative titrimetric techniques, thermometric solubility graphing, and systematic qualitative inorganic and organic analysis. It prepares candidates for practical laboratory mastery and precise scientific reporting.

  • Duration: 2 Hours 15 Minutes
  • Total Marks: 40
  • Number of Questions: 3 (Questions 1 - 3)
  • Structure: Compulsory practical paper consisting of 3 comprehensive experimental questions: Question 1 on quantitative solubility and titration (17 marks), Question 2 on inorganic salt qualitative analysis (17 marks), and Question 3 on organic liquid qualitative tests (6 marks).

  It covers the following topics:

  • Section A:
    • Thermochemistry and solubility determination of a dibasic organic acid at varying temperatures
    • Solubility curve plotting and graphical data interpretation
    • Acid-base volumetric titration (standardization of sodium hydroxide using a dibasic acid)
    • Stoichiometric calculations (molar concentration, moles reacted, and relative formula mass determination)
    • Systematic qualitative inorganic analysis of solid C (action of heat, solubility, precipitation with lead (II) nitrate, barium nitrate, sodium hydroxide, and potassium iodide)
    • Organic qualitative analysis of liquid D (combustion and flame tests, water miscibility, and oxidation testing with acidified potassium dichromate (VI))
• File Size:

  245.28 KB
• Length:

  7 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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