Gas Laws

Boyle’s law

P1V1=P2V2

Charles’ law

V1/T1=V2/T2

Gay-Lussac’s law

P1/T1=P2/T2

combined gas law

P1V1/T1=P2V2/T2

Ideal gas law

PV=nRT, M=mRT/PV, D=PM/RT

Dalton’s law of partial pressures

Ptotal=P1+P2+…+Px

Graham’s law of effusion

vsmall/vlarge=√Mlarge/Msmall

Ideal/universal gas constant (atm)

R=0.0821

Ideal/universal gas constant (kPa)

R=8.31

Ideal/universal gas constant (torr/mmHg)

R=62.4

M

molar mass

m

mass

n

moles

V

volume

v

velocity

P

pressure

T

temperature

1 atm= ___ Torr/mmHg

760

1 atm= ___kPa

101.325

1 atm= ___psi

14.7