Gases

Gas Molecules

Gas have no definite size or shape are widely seperate and can be easily compressed

Random Constnat Motion

Diatomic Gases

Atoms which exist is pairs due to unstable nature

Diamtoic Gases

HAVE NO FEAR OF ICE COLD BEER
H2 N2 F2 O2 I2 C2 Br2

Properties that affect gas behaviors

Temperature - increases the faster things move

Volune - take the shape of volume and container

Pressure - smaller area means more pressure

pressure equation

pressure = force / area

Gas Compressed means

Increase pressure due to less volume

Gas Expanded

Volume increase means pressure decrease

Boyle Law

P1V1 = P2V2

Charles Law

V1/T1 = V2/T2

Avogadros Law

V1/n1 = V2/n2

Boyles Law means what

Pressure and volume are inversely proprotional under constant temperature and moles

Charles Law means

Volume and temperature are directly proportional under constnat presurre and moles

what does avogadro law mean

volume and mols are directly proportional under constnat pressure and temp

Gay Lussac Law means what

pressure and temperature are directly proportional under constnat volume and mols

Gay Lussac Law

P1/T1 = p2/T2

Combined Gas Law

P1V1/n1T1 = P2V2/n2T2

Ideal Gas

Ideal gas behaves in a constant random straight line accprding to kentic moeluclar gas theory

Where do ideal gas behave most ideally

at low pressure and high temperature

why are gases ideal at low pressure and high temp

low pressure means less far apart and at high temp because faster energy and less forces

Ideal Gas Law Equation

PV = nRT

R of PV = nRT depends on the units

R = 0.0821 L atm

% = 8.314 k pa

STP stands for what

1 mol of gas at STP = 22.4 L

what volume does 1.5 mol of Br2 at STp

1 mol/ 22.4 mol = 1.5 mol / V

V = 33.6 L

Kinetic Molecular Theory 5 rules

particle in gas always random

combinded volume of particles is neglible

particles exert no force on one antoher

no IMF are comlete elastic

all gases have teh same average kinetic energy at given temp

Dalton Law of partial Pressure

total pressure of the mixture is equal to the sum of partial pressure

Equation of Dalton Law of partial pressure

total pressure = p1 +p2 + p3

Another formula of dalton law of partial pressure

P1 = X1 P total

X1 = moles of gas/ total moles

Gas Density

Density is the mass of a gas occupying a volume

what is the equation for gas density

density = PM/RT

P = pressure

M = Molar MassD

Diffusion

Molecules moving from high to low

Effusion

A confined gas esacpes through a small hole in its container

Which effuses faster

the one with smaller molecuoar weight g

graham law of effusion

effusion rate 1/effusion rate 2 = square root M2/M1 M = molar mass