The Combined Gas Law (Leaving Cert Chemistry): Flashcards

Boyle's Law and Charles' Law

Inversely related (at constant temperature)

Directly related (at constant pressure)

$\frac{p_1V_1}{T_1} = \frac{p_2V_2}{T_2}$

Initial pressure, volume, and temperature

Final pressure, volume, and temperature

General Gas Law

Kelvin (absolute temperature)

$K = °C + 273$

0°C or 273 K

100 kPa or 1 atmosphere

Charles' Law requires absolute temperature

Pressure, volume, and temperature

Units must match on both sides of equation