CBSE Class 11 Chemistry Thermodynamics Notes Set B

THERMODYNAMICS

Thermodynamics: is the branch of science which deals with deals with the study of different forms of energy and the quantitative relationship between them.

Significance of Thermodynamics: to answer questions -

1. How do we determine the energy changes involved in a chemical reaction/process?

2. Will it occur or not?

3. What drives a chemical reaction/process?

4. To what extent do the chemical reactions proceed?

TERMS:

System- the part of universe in which observations are made and remaining part of universe is the Surroundings.

Universe= System + Surrounding

Open System: can exchange both matter & Energy with the surrounding

Closed System: can exchange only energy with the surrounding but not matter,Isolated System: can neither exchange matter nor energy with the surrounding.

State variables or state functions :Variables like p, V, T are called state variables or state functions because their values depend only on the state of the system and not on how it is reached.

Isothermal Process: temperature remains constant, i.e. ΔT=0

Adiabatic Process: no heat exchange between the system and the surrounding, i.e. Q=0

Isochoric process: volume of the system remains constant, i.e., ΔV=0

Isobaric Process: pressure of the system remains constant, i.e., ΔP=0

Cyclic Process: energy of the system remains the same, i.e., ΔU=0

 Please click the link below to download pdf file for CBSE Class 11 Chemistry Revision Thermodynamics (2).