Why Do Solids Sublime into Gas?

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    Sublimation
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Discussion Overview

The discussion revolves around the phenomenon of sublimation, specifically the transition of solids directly into gas. Participants explore potential explanations for this process, including molecular interactions and environmental conditions. The scope includes theoretical reasoning and practical examples.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant suggests that sublimation occurs due to the attraction between air molecules and the weaker molecular structure of solid molecules, proposing an adhesion effect where surface molecules are drawn away.
  • Another participant challenges the initial explanation, implying that it is incorrect and suggesting that further research on sublimation could yield more accurate information.
  • A third participant introduces a phase diagram to illustrate conditions under which sublimation can occur, mentioning practical applications such as drying clothes in winter.
  • A later reply expresses confusion regarding the practical example of sublimation provided, questioning its relevance or accuracy.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are competing explanations and some disagreement over the validity of the initial claim regarding sublimation.

Contextual Notes

There are limitations in the explanations provided, including assumptions about molecular interactions and the lack of detailed discussion on the conditions necessary for sublimation to occur.

THANApHD
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Any one knows the reason for the Sublimation( solid to gas). I think the attraction between the air molecules and the weaker molecular stuctured solid molecules. its and adhesion effect. the molecules in surface of the solid is being attracted by the air molecules ( such like polar molecules NO2 H2O ). but this attraction is grater than the atrraction between the other molecules in the solid. so it is separated and goes away. this is a continues action. Is this answer is right?
 
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THANApHD said:
Any one knows the reason for the Sublimation( solid to gas). I think the attraction between the air molecules and the weaker molecular stuctured solid molecules. its and adhesion effect. the molecules in surface of the solid is being attracted by the air molecules ( such like polar molecules NO2 H2O ). but this attraction is grater than the atrraction between the other molecules in the solid. so it is separated and goes away. this is a continues action. Is this answer is right?
Your answer is wrong. If you Google on the word sublimation, you will find lots of explanations and examples.
 
http://upload.wikimedia.org/wikipedia/commons/thumb/3/30/Phase-diag.svg/575px-Phase-diag.svg.png"


This is a phase diagram. If you look at the graph you can see that at a low enough pressure and the right temperature, sublimation can occur. In the winter you could hang your clothes out to dry since the water would sublime off.
 
Last edited by a moderator:
gravenewworld said:
In the winter you could hang your clothes out to dry since the water would sublime off.
What? /* ...*/
 

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