How Much Gas is in 1 Mole?

1 mole of any gas occupies 22.4 liters at standard temperature and pressure (STP: 0°C and 1 atm).

Molar Volume:

• At STP: 1 mole gas = 22.4 L
• Universal: Same for all ideal gases
• Basis: Ideal gas law (PV = nRT)

STP Conditions:

• Temperature: 0°C (273.15 K)
• Pressure: 1 atmosphere (101.325 kPa)

At Different Conditions:

• Use ideal gas law: PV = nRT
• V = nRT/P
• Example at 25°C, 1 atm: ~24.5 L per mole

Applications:

• Gas stoichiometry calculations
• Reaction yield predictions
• Industrial gas measurements

Importants Points:

• At STP: 1 mole = 22.4 L
• All gases: Same molar volume at STP
• Other conditions: Use PV = nRT