IB Chemistry HL 1.5.4 Ideal gas equation
IB Chemistry HL 1.5.4 Ideal gas equation
Use pV = nRT confidently in IB questions by converting units first, then calculating moles or volume and predicting pressure changes for fixed gases.
How this is tested
- use pV = nRT with SI units; convert cm3 to m3 and degC to K before calculating n
- from a volume % like 0.10% NO in exhaust, find NO moles first, then apply pV = nRT
- at constant T, doubling V halves p; heating 30 degC to 60 degC raises p by slightly more than 10%