Gas Laws

Boyle's Law

indirect relationship between pressure and volume

Boyle's Formula

P1 x V1 = P2 x V2

Charles's Law

direct relationship between volume and temperature

Charles's Formula

V1/T1 = V2/T2

Gay Lussac's Law

the direct relationship between pressure and temperature

Gay Lussac's formula

P1/T1 = P2/T2

Combined Gas Law

a law combines Lussac's, Charles's, and Boyles's Law, indirect

Combined Gas Formula

P1V1/T1=P2V2/T2

Avogadro's Law

the direct relationship between the # of moles and volume

Avogadro's Formula

V1/n1= V2/n2

Ideal gas law

the ideal law with all factors at STP, including # of moles

Ideal gas formula

PV=nRT

Combined Gas Law

P1V1/T1=P2V2/T2

Molar Volume at STP

22.4 L (T=273k P=1 atm N=1 mol)

Ideal Gas Density Fomula

d=PM/RT Unit g/L

Density of a gas at STP

molar mass(g/mol)/molar volume(L/mol)

Daltons Law

Ptotal=Px+Py+Pz…(pressure total = partial pressure of given gases)

Mole Fraction

Pi=Xi* Ptotal