Ideal Gas Laws

IB Stochiometry Topic 1

Boyle’s Law

Pressure is indirectly proportional to Volume

Charles’ Law

Temperature is directly proportional to Volume

Gay-Lussac Law

Pressure is directly proportional to Temperature

Avogadro’s Gas Law

Volume is directly proportional to number of moles

STP Values

273K

1atm

100KPa

Pa —> atm

divide by 101300

At atmospheric pressure?

1 atm

Gas constant (R)

0.0821 when working with atm

8.31 when working with KPa

How to find number of particles (Avogadro’s constant)

number of particles —> divide avogadro constant —> number of mole

number of mole —> multiply avo constant —> number of particles