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Assumptions of Ideal Gas Model
All collisions between particles are perfectly elastic (KE conserved)
Obey Newton’s laws
No intermolecular forces between particles
All particles are perfectly hard round spheres
All particles have negligible volume
Ideal Gas
All internal energy added becomes KE
All particles have KE, no PE
Linear relationship between internal energy added and temperature (because no PE, only KE)
Ideal Gases in real life
High temp, low pressure
Further apart due to low pressure = less PE
High temp = more KE
Boyle’s Law (P and V)
P∝1/V
PV=nRT
P=nRT(1/V)
IN KELVIN
Charles’ Law (V and T)
V∝T
V=(nR/P)T
IN KELVIN
Gay-Lussac’s Law (P and T)
P∝T
P=(nR/V)T
IN KELVIN