CH25401 Chemical Engineering Thermodynamics II – Semester IV – Chem – R-2025

Subject Code & Name: CH25401 – Chemical Engineering Thermodynamics II

Regulation: R-2025

Semester: IV (Fourth Semester)

Branch: B.Tech. Chemical Engineering (Chem)

Credits / L-T-P: 3 Credits | L-T-P: 3-0-0

Course Objectives

• To provide comprehensive knowledge on solution thermodynamics, phase equilibria, chemical reaction equilibrium and refrigeration systems for chemical engineering applications.

Full Unit-wise Syllabus

Unit I – Solution Thermodynamics

Partial molar properties, ideal and non-ideal solutions, standard states definition and choice, Gibbs-Duhem equation, excess properties of mixtures, pure species and liquids.

Activities: Solving problems on ideal and non-ideal solution behavior, apply Gibbs- Duhem equation for thermodynamic property estimation.

Unit II – Phase Equilibrium

Phase equilibrium in ideal solution, excess Gibbs free energy models, Henry’s law, fugacity, phase diagrams for homogeneous systems and for systems with a miscibility gap, effect of temperature and pressure on azeotrope composition, liquid-liquid equilibrium, ternary liquid-liquid equilibrium.

Activities: Interpret phase diagrams and azeotropic behavior, analyze vapor-liquid and liquid-liquid equilibrium systems.

Unit III – Vapor-Liquid Equilibrium

Vapor-liquid equilibrium at low, moderate and high pressures; bubble and dew point calculation, thermodynamic consistency test of VLE data.

Activities: Perform bubble point and dew point calculations, analyze VLE behavior under varying pressure conditions.

Unit IV – Chemical Reaction Equilibrium

Chemical reaction equilibrium of single and multiple reactions, standard Gibbs free energy change, equilibrium constant-effect of temperature; homogeneous gas and liquid phase reactions.

Activities: Analyze equilibrium conversion for homogeneous reactions, evaluate the effect of temperature on equilibrium constants, solve reaction equilibrium problems for gas and liquid phase systems.

Unit V – Refrigeration and Liquefaction

Principles of refrigeration, methods of producing refrigeration, liquefaction process, coefficient of performance, evaluation and performance of vapor compression and gas refrigeration cycles .

Activities: Analyze liquefaction and vapor compression systems, compare coefficient of performance of refrigeration processes under different operating conditions.

Course Outcomes (COs)

• CO1: Understand partial molar properties and the thermodynamic behavior of ideal and non-ideal solutions.
• CO2: Apply vapor–liquid equilibrium principles for bubble point, dew point, flash, and consistency calculations.
• CO3: Analyze phase equilibrium behavior using thermodynamic models, activity coefficient models, and phase diagrams.
• CO4: Evaluate chemical reaction equilibria and the influence of temperature and operating conditions on equilibrium conversion.
• CO5: Design refrigeration and liquefaction systems based on thermodynamic principles, performance analysis, and energy efficiency considerations.

Assessment Pattern (Quick Note)

• Weightage: Continuous Assessment 40% | End Semester Examinations 60%
• Internal methodology: Assignments (20%), Problem-solving using thermodynamic models and software tools (20%), Quiz / MCQs (20%), Internal Examinations (40%)

Source: Official Anna University – B.Tech. Chemical Engineering R-2025 Syllabus
Last Updated: October 2026