In this video, we derive the mathematical equation for work done in an isothermal reversible process, one of the most important derivations in Thermodynamics (Class 11 Chemistry) and a frequently asked topic in JEE Main, JEE Advanced, NEET, and Board exams. The derivation is explained step by step with proper logic, starting from basic thermodynamic principles and ideal gas equation, so that students clearly understand where the formula comes from instead of memorizing it. This concept is crucial for solving numericals related to isothermal expansion and compression, and it also builds a strong foundation for thermodynamic processes and cycles. 🧪 What You Will Learn in This Video ✔️ Meaning of isothermal process ✔️ Difference between reversible and irreversible process ✔️ Conditions for isothermal reversible process ✔️ Step-by-step derivation of work done equation ✔️ Mathematical integration involved ✔️ Final formula for work done ✔️ Sign convention and physical significance ✔️ Common mistakes students make in exams 🎯 Why This Video is Important for Exams ✅ Directly asked in Board exams as derivation ✅ Used in JEE & NEET numericals ✅ Helps understand thermodynamics deeply ✅ Improves speed and accuracy in problem solving 📚 Ideal For • Class 11 Chemistry students • JEE Main & Advanced aspirants • NEET UG aspirants • Students preparing for Board exams • Anyone learning Thermodynamics from basics 👨🏫 About the Instructor This lecture is taught by Abhishek Sengar (B.Tech, Chemical Engineering) — Ex-Aakash | Ex-BYJU’S | Ex-PACE | Ex-Avanti, with 13+ years of experience in mentoring JEE & NEET aspirants. His teaching style focuses on clarity, derivation logic, and long-term retention. 🔔 Join the Chemca Community 👉 Subscribe for complete Chemistry courses 👉 Visit www.chemca.in for notes, quizzes & practice problems 👉 Learn Chemistry the conceptual and exam-focused way #IsothermalProcess #ThermodynamicsClass11 #IsothermalReversibleProcess #WorkDoneThermodynamics #JEEChemistry #NEETChemistry #PhysicalChemistry #Chemca