GasGasGas - The FRCA Primary Exam Podcast VivaCast 004 - Vapours - Heat - Gas
Jan 16, 2025
Dive into the fascinating world of vapours as Tom explains the equilibrium between liquid and gas, including the nuances of relative and absolute humidity. Discover how anaesthetic vapourisers operate compared to closed containers, and the differences between sevoflurane and desflurane. The discussion also tackles the four laws of thermodynamics and the significance of critical temperature. Plus, enjoy clever mnemonic aids for remembering gas laws, making complex concepts more accessible and entertaining!
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Mock Exam Shook Up Revision Plans
- Tom felt underprepared after Christmas and a mock SOE exam exposed gaps.
- He reported OSCEs and clinical stations went well despite SOE weaknesses.
Vapour And Saturated Vapour Pressure
- A vapour is a gas below its critical temperature that can coexist with its liquid at equilibrium.
- That equilibrium defines a saturated vapour pressure for a substance at a given temperature.
Two Ways To Describe Humidity
- Relative humidity is the fraction of actual vapor pressure to saturated vapour pressure at that temperature.
- Absolute humidity measures water vapour mass per unit volume of gas.