Gas volumes: Quantitive Chemistry: Chemistry: GCSE (9:1)

• Room temperature

  20 °C
• Room pressure

  1 atmosphere
• Volume of 1 mol of any gas at RTP

  24 dm3
• Volume of 0.5 mol of any gas at RTP

  12 dm3
• Volume of 2 mol of any gas at RTP

  48 dm3
• RTP


  Room temperature and pressure
• Mol of gas at RTP =


  Volume (dm3) ÷ 24 dm3
• cm3 in a dm3

  1000
• cm3 =

  dm3 x 1000
• dm3 =


  cm3 ÷ 1000
• Gas volume at RTP =

  moles x 24
• Temperature increases

  Gas volume increases
• Temperature decreases

  Gas volume decreases