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 msss 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 volume of fixed amount of gas |
varies directly with its absolute temperature . |
V |
V 1 V 2 |
V α T or |
T cons tan t ,
T
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T |
|
1 2 |
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6 . Gay lussac ’ s Law : At constant V , The pressure of fixed amount of gas varies directly with its absolute temperature .
P α T or
P const ,
T
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 persure : 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 )
P
1
T
1
P
2
T
2