Edexcel GCSE Chemistry · 1CH0
Specification 5.16C · Paper 1
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GCSE Chemistry · key term
The usual conditions under which the GCSE molar gas volume is used, commonly taken as and a pressure of one atmosphere.
Used by Edexcel and OCR
Specification 5.16C · Paper 1
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
The usual conditions under which the molar gas volume is taken to be 24 dm³ mol⁻¹ for GCSE calculations.
Revise: Molar gas volumeConsequently, one mole of hydrogen, oxygen or carbon dioxide occupies the same volume at RTP even though their particles have different masses.
State the conditions: applies at room temperature and pressure, not at every temperature and pressure.
Check that the gas is at room temperature and pressure before using .
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