CBSE Class 11 Chemistry States Of Matter Notes Set C

CBSE Class 11 Chemistry States of Matter. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations. 

CHAPTER 5        

STATES OF MATTER

1. Change in state : It is over all effect of Intermolecular forces, molecular Interactional energy & thermal energy: 

2. Measurable properties of gases : P,V, T, n, Viscosity, specific heat are some measurable properties. 

3. Gas Laws : The quantitative relationship b/w any two of the variables (V, n, P,T) when other two are constant. 

4. Boyle’s Law : The pressure of fixed mass of gas varies inversely with the volume at constant T. P α 1/V(n,T const.)

 P₁V₁ = P₂ V₂

5. Charle’s Law : At constant P, the 

7. Ideal gas equation : The relationship b/w P, V and T by Gas Laws PV= nRT.8. Avogadro’s Law : At given T and P, the volume of gas varies directly to the amount of gas . V α n ( P, T constant)

9. Dalton’s Law of partial pressure : The pressure enerted by a mixture of non reacting gases is equal to the sum of their partial pressure at constant (V,T) 

P (total ) = P1 + P2 + P3 + ………. (T, V, constant)

10. Kinetic Molecular theory :

a. Gases consist of large number of identical particles (atoms or molecules) that are so small that the actual volume of the molecules is negligible in comparison to the empty space between them.

b. There is no force of attraction between the particles of a gas at ordinary temperature and pressure

c. Particles of a gas are always in constant and random motion 

d. Pressure is exerted by the gas as a result of collision of the particles with the walls of the container

e. Collisions of gas molecules are perfectly elastic

f. At any particular time, different particles in the gas have different speeds and hence different kinetic energies

g. Average kinetic energy of the gas molecules is directly proportional to the absolute temperature

11. Real Gases : The gases which deviates from Ideal behavior at higher pressure and low temperature b/c of force of attraction b/w molecules increases. 

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