Chemistry teacher

 -Dr.Sanjaykumar Pawar  THERMODYNAMICS – CLASS 11 CHEMISTRY  Thermodynamics – Learn the laws of energy, heat, work, enthalpy, entropy and Gibbs free energy for NEET and JEE. Introduction Thermodynamics is the branch of science that deals with heat, work, energy and their transformations. In Chemistry, thermodynamics helps us understand why chemical reactions release or absorb energy, how energy changes occur during physical processes, and whether a reaction is thermodynamically favourable. Examples: Burning of fuels releases heat. Melting of ice absorbs heat. Expansion of gases involves work. Chemical reactions involve changes in internal energy and enthalpy. 1. Basic Terminology of Thermodynamics 1.1 System A system is the part of the universe selected for thermodynamic study. Example: Gas enclosed in a cylinder. 1.2 Surroundings Everything outside the system that can interact with it is called the surroundings. 1.3 Boundary The real or imagi...

 - Dr.Sanjaykumar Pawar    Properties of Gases Explained: Equations, Gas Laws & Practice Examples  Understanding how gas molecules create pressure through collisions is key to mastering the Ideal Gas Law (pV = nRT). Chapter 1: Properties of Gases - Complete Notes Chapter 1: Properties of Gases Complete Beginner's Notes 1. Introduction — What Is a Gas? A gas is a state of matter that has: No fixed shape No fixed volume No fixed boundary of its own The ability to expand and fill the entire container For example, when air is put into a balloon, it occupies the available space inside the balloon. How are gas molecules arranged? Imagine a container filled with millions of tiny balls. The molecules of a gas: Are in continuous random motion. Have relatively large distances between them. Move faster when temperature increa...

Visualizing Boyle’s Law: As the volume increases from 120mL to 180mL, the pressure drops from 1.2 bar to 0.8 bar at a constant 35°C. Internal Link   * Ideal Gas Law Overview: "Mastered Boyle's Law? Now see how Temperature fits in with the Ideal Gas Law (PV=nRT)."  * Chemistry Practice Problems: "Browse our full library of Gas Law Practice Questions for more exam prep."  * Units of Pressure Conversion: "Confused about Bars vs. Pascals? Check out our Pressure Unit Conversion Guide." Gas Law Practice Problem Problem 1: Boyle's Law A vessel of 120 mL capacity contains a certain amount of gas at 35°C and 1.2 bar pressure. The gas is transferred to another vessel of volume 180 mL at the same temperature. What would be its pressure? Your Answer (bar): Check Solution Solution: Using Boyle's Law: P1V1 = P2V2 1. P1...