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7.2 - Mole and Gas Volumes Part 2

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  • ✓Define molar volume of a gas under standard conditions.
  • ✓Use the molar volume to calculate the volume, mass or number of moles of a gas.
  • ✓Apply the mole concept to reactions involving gases.
  • ✓Perform calculations using balanced chemical equations involving gaseous reactants and products.
⏱ 0 mins🎯 36 marks
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Imagine taking a deep breath in the warm Caribbean air. Each breath you take contains thousands of litres of gas made up of millions of molecules, yet chemists measure them all using one unit: the mole. When dealing with gases, we use the molar volume, the space one mole of gas occupies at a specific temperature and pressure.
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At room temperature and pressure (r.t.p.), one mole of any gas occupies 24 dm³ (24,000 cm³). At standard temperature and pressure (s.t.p.), one mole of any gas occupies 22.4 dm³ (22,400 cm³).
💡Engage
Imagine taking a deep breath in the warm Caribbean air. Each breath you take contains thousands of litres of gas made up of millions of molecules, yet chemists measure them all using one unit: the mole. When dealing with gases, we use the molar volume, the space one mole of gas occupies at a specific temperature and pressure.
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Next: 7.3 - Mole and Concentration of Solutions Part 3 →
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