States and Gas Law Flashcards
What is the Zeroth Law?
“If A is at the same temperature as B, and B is at the same temperature as C, then C is the same temperature as A”.
What is Boyle’s Law?
pV = const.
for n and T are constant
What is Charle’s Law?
V = const. x T
for n and P are constant.
P = const. x T
for n and V are constant
What is Avagradro’s principle?
Equal V of gas at constant P and T contain same particles.
V = const. x n
for T and P are constant
What 2 conditions are required for Ideal Gas behaviour?
Negligible interparticle forces.
Does not need to be monatomic.
What is the Ideal Gas Law?
PV = nRT
Or
PV = NkT
n: number of moles
k: Boltzmann’s constant
N: number of particles
Repulsive forces lead to…
Expansion
Attractive forces lead to…
Compression
When are interactions important in a gas?
High density
Low temperature
(Van de Waals) What does a(n/V)^2 mean?
Reduction in pressure, due to attraction.
Correction
(Van de Waals) What does nb mean?
Reduction in volume, due to repulsion.
Correction.
Where b is size of molecules
What is the compression factor?
Z = Vm/Vo
Or
PVm = ZRT
Compression factor is what for an Ideal Gas?
Z = 1
