NivaarExam PrepOfficial exam papers ↗

23-Chem-A1 Process Balances and Chemical Thermodynamics: May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 HDA Process — Purge/Recycle Balance for Benzene from Toluene
  2. Question 2 Coal Combustion — Air, Flue-Gas Mass and Volume
  3. Question 3 Sensible Heat Lost by a Cooling Flue Gas
  4. Question 4 Fugacity of Propane over Water and Its Henry's Constant
  5. Question 5 Relative Volumetric Feed Rates of Real Ethylene and Oxygen
  6. Question 6 Isothermal Compression of Non-Ideal Ethylene

Start with Question 1 →

16-Chem-A1, May 2017 — three-hour, open-book examination. The paper is in two parts: Part A (Questions 1–3, process mass & energy balances) and Part B (Questions 4–6, chemical thermodynamics). Candidates answer two questions from each part; all six are worked below as a complete study resource.

Reference texts (this subject). Felder & Rousseau, Elementary Principles of Chemical Processes, 4th ed. (mass & energy balances, combustion, recycle/purge); Smith, Van Ness & Abbott, Introduction to Chemical Engineering Thermodynamics, 8th ed. (fugacity, activity coefficients, generalized correlations, equations of state); property data from the paper's appended Smith–Van Ness tables (App. B critical constants; App. E Lee/Kesler charts).