Chemistry › Section I · Gases › Topic I.3
Gas stoichiometry and partial pressures
The ideal gas law turns a measured volume of gas into moles, and moles are what balanced equations count. This topic uses that bridge to find gas densities and molar masses, to handle mixtures of gases, and to calculate how much gas a reaction makes or needs.
In this topic
- Gases join the stoichiometry road map
- Density and molar mass of a gas
- Worked example: the density of carbon dioxide
- Dalton's law of partial pressures
- Partial pressures you breathe
- Collecting a gas over water
- Worked example: hydrogen collected over water
- Volumes of reacting gases
- Worked example: inflating an airbag
- Common mistakes to avoid
- Key takeaways
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