JEE-MAINS | CHEMISTRY | CHEMICAL THERMODYNAMICS | PROBLEMS | LEC-6

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Welcome to Purnea Live Classes. In Lecture 3 of Chemical Thermodynamics for JEE Mains Chemistry, we focus on one of the most frequently asked concepts: Work Done by a Gas in Various Thermodynamic Processes.

This session is crucial for mastering numerical questions based on PV work and understanding how different types of processes (like isothermal, adiabatic, isobaric, isochoric, and cyclic) affect the work done by or on a system.

Topics Covered in This Lecture:
Concept of Thermodynamic Work
Formula for Work in Expansion and Compression
Work done in:
  • Isothermal Process
  • Adiabatic Process
  • Isobaric Process
  • Isochoric Process
  • Cyclic Process

Graphical Understanding (P-V Diagrams)
Sign Convention for Work
Numerical Problems based on JEE Mains pattern
Application of Work Formulae in Real-life Thermodynamic Systems
Mistakes to Avoid in Solving Work-Based Problems
This lecture explains each concept with clarity and detail, using solved examples and shortcut techniques for faster calculations—tailored for JEE Mains 2025 aspirants.
Understanding how to calculate work in various thermodynamic processes is a foundational skill in Chemistry, especially for students aiming to score well in Physical Chemistry.
Stay with us in the next lecture to explore First Law of Thermodynamics and Internal Energy in depth.
Subscribe to Purnea Live Classes for full JEE Chemistry syllabus coverage with detailed theory, tricks, PYQs, and revision lectures.

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