Thermodynamics — Class 11 CBSE Chemistry revision notes
A 5-page visual revision sheet for Thermodynamics, written for Class 11 CBSE Chemistry. Formulas, diagrams and the traps that cost marks, laid out to be read the night before rather than the term before. Free, and it opens inside CapCompass.
What this Thermodynamics sheet covers
- System, surroundings, and the three kinds of system
- State functions and thermodynamic processes
- The first law of thermodynamics
- internal energy change = heat absorbed plus work done ON the system
- pressure-volume work done ON the system during a volume change
- Sign convention, read carefully
- q > 0
- q < 0
- w > 0
- w < 0
- Enthalpy
- enthalpy, defined from internal energy
- enthalpy change at constant pressure
- for a reaction involving ideal gases
- Exothermic and endothermic reactions
- Standard enthalpies: naming the conditions
- Hess's law
- total enthalpy change is the same however many steps the path is broken into
- Worked: Hess's law, target reaction from two given steps
- Bond enthalpy
- Entropy: a measure of disorder
- Gibbs free energy
- Gibbs energy, combining enthalpy and entropy at temperature T
- Spontaneity from the signs of ΔH and ΔS
- Worked: is a reaction spontaneous at 400 K
- Relating ΔG to the equilibrium constant
- Traps that cost marks
- Tricks that save time
How CapCompass uses this sheet
These notes are not a standalone PDF. CapCompass plans Chemistry chapter by chapter against your real exam dates and free hours, and when the plan reaches Thermodynamics the sheet opens inside the study block itself — at the page covering the sub-topic that block is on, with the timer still running. Revision arrives at the moment the plan says revise, instead of having to be gone looking for.