Gas Laws (Leaving Cert Chemistry): Flashcards

At const. temp, volume inversely proportional to pressure

$P \times V = \text{constant}$ (at constant temperature)

At const. pressure, volume directly proportional to temp (K)

$\frac{V}{T} = \text{constant}$ (at constant pressure)

Add 273

$\frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2}$

Gases react in simple whole-number ratios by volume

Equal volumes of gases (same T, P) have equal molecules

22.4 L

0°C (273 K) and 100,000 Pa

$PV = nRT$

8.31 J K⁻¹ mol⁻¹

Inversely proportional (volume to pressure)

Directly proportional (volume to temperature)