Vapour Pressure| Boiling| Atmospheric P

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Discussion Overview

The discussion centers on the concept of boiling, specifically the conditions under which an object boils, particularly the relationship between atmospheric pressure and vapor pressure. Participants explore definitions and mechanisms of boiling, as well as the role of pressure in vaporization.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about why an object boils when atmospheric pressure equals vapor pressure, noting a lack of explanation in their textbook.
  • Another participant asks for a definition of boiling, indicating a need for clarity on the term.
  • It is proposed that when atmospheric pressure equals vapor pressure, particles not necessarily on the surface can form bubbles and vaporize.
  • A further elaboration suggests that boiling involves vaporization occurring both at the surface and within the solution, which can only happen when vapor pressure is equal to or greater than the surrounding pressure. This point is made to clarify that the equality of vapor pressure and atmospheric pressure is a conclusion rather than a definition.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the definition of boiling or the explanation of the boiling process, indicating that multiple views and uncertainties remain in the discussion.

Contextual Notes

There are limitations in the discussion regarding the definitions of boiling and the assumptions about pressure conditions that are not fully explored or resolved.

Epsillon
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Ok I do not get WHY an object boils when atmospheric pressure is equal to Vapour pressure.

Can anyone explain this? In my textbook it doesent explain it at all.
 
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What is definition of boiling?
 
When atmospheric pressure= vapour pressure. and particles that are not neccessarly on surface are forming bubles and vaporizing
 
Epsillon said:
particles that are not neccessarly on surface are forming bubles and vaporizing

That's the most important part of it - boiling is vaporization that takes place not only on the surface, but also inside of the solution. That can take place ONLY when the vapor pressure is identical with or larger than the pressure of the surroundings. To some extent vapor pressure = atmospheric pressure is only a conclusion, not part of the definition.
 

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