Real Gas PV Curve: Volume Explained

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    Curve Gas Real gas
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Discussion Overview

The discussion revolves around the volume characteristics of real gases, particularly in the context of the PV curve after liquefaction. Participants explore the implications of gas volume versus liquid volume in thermodynamic models.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant questions why the liquid part of the PV curve still shows volume after the gas has been liquefied, suggesting that the volume should have disappeared.
  • Another participant prompts others to reflect on the question for a deeper understanding.
  • A different participant asserts that the volume in question refers specifically to the gas volume, implying that liquefaction should eliminate volume.
  • In contrast, another participant clarifies that the volume being discussed is the total volume, noting that liquid still has volume, albeit smaller than that of the gas.

Areas of Agreement / Disagreement

Participants express differing views on whether the volume after liquefaction should be considered as zero or as a reduced volume, indicating that multiple competing perspectives remain unresolved.

Contextual Notes

There is an implicit assumption regarding the definitions of gas and liquid volumes, and the discussion does not resolve the mathematical implications of these definitions.

abcd8989
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After the gas has been liquified, the gas volume should have disappeared. Why the liquid part of the curve still possesses volume?
 
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Think about it for a few minutes, please.
 
Isn't the volume under consideration the gas volume? When the gas is liquified, there should be no volume...
 
No, the volume under consideration is the complete volume. Liquid still possesses volume, though it is much smaller than the gas volume.
 

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