Chemistry Gases

Volume Units

SI - m³

nonSI - 1L = 1dm³, 1ml = 1cm³

Pressure + Units

pressure = force/area

SI :

Pa - 1Nm^-2

bar - 1×10⁵ Pa = 100KPa

Torr - 1mmHg = 133.32Pa

atm - 1.013bar = 101325Pa = 760Torr

non SI : PSI, 1psi = 6895Pa

Standard conditions for temperature for temperature and pressure

SATP - 298.15K(25^o C), 1bar(100KPa) —> more common

STP - 273.15K(0^o C), 1atm (101.325KPa)

Avogadro’s law

Volume is proportional to the amount of particles(mol) at constant pressure and temperature

Boyle’s Law

pressure is inversely proportional to volume at fixed amount and temperature.

Linear relationship

pV = constant, at constant temp and amount

Charle’s Law

volume is proportional to absolute temperature at a fixed amount and constant pressure.

Ideal Gas Equation

pV = nRT

p - Pa

V - m³

n - mol

R - 8.314 JK^-1 mol^-1

^{T - K}