Anaes SAQs · Medical gases & gas supply
The gas laws and the cylinder content
The Primary gas-laws SAQ — Boyle (P1V1=P2V2), Charles (V1/T1=V2/T2), the universal gas law (PV=nRT). The O2 cylinder content = 5 L x 137 = 685 L of free gas. The N2O is a liquid (constant vapour pressure).
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Prompt
State Boyle's law and Charles's law, and apply them to calculate the free gas content of an oxygen cylinder (5 L internal volume, 137 bar pressure) and to explain why the N2O cylinder pressure does not reflect the content.
Question
State Boyle's law and Charles's law, and apply them to calculate the free gas content of an oxygen cylinder (5 L internal volume, 137 bar pressure) and to explain why the N2O cylinder pressure does not reflect the content. (Question stem restated — the worked answers below carry the primary-source citations.)
References1ShowHide
- [2]Srivastava U. Anaesthesia gas supply: gas cylinders. Indian J Anaesth, 2013.PMID 24249883