Talk:Dynamic equilibrium

From Wikipedia, the free encyclopedia

This article is within the scope of multiple WikiProjects. Click [show] for further details

Portal This article is within the scope of WikiProject Physics, which collaborates on articles related to physics. Start This article has been rated as Start-Class on the assessment scale. ??? This article has not yet received an importance rating within physics. Help with this template This article has been rated but has no comments. If appropriate, please review the article and leave comments here to identify the strengths and weaknesses of the article and what work it will need. This article is within the scope of WikiProject Systems, which collaborates on articles about the idea of systems. If you would like to help, you can edit this article or visit the project page, where you can join the project and/or contribute to the discussion. Start This article has been rated as Start-Class on the assessment scale. Mid This article is on a subject of mid importance within Systems. Help with this template This article has been rated but has no comments. If appropriate, please review the article and leave comments here to identify the strengths and weaknesses of the article and what work it will need.

Maybe I'm misinterpreting the text in the article due to the fact that english isn't my native language, but aren't most chemical reaction irreversible?

But to see if I get the principal of dynamic equilibrium:

Our body takes oxygen from our blood, but our lungs refill our blood with fresh oxygen. So this is an example of dynamic equilibrium within 'our' system?

If you apply enough energy to the products of chemical reactions you can break them apart and form the reactants, so chemical reactions are reversible. The example above isn't really dynamic equilibrium because ther is no point of equilibrium. Our body uses the oxygen, the O2 that has been used doesn't return to the blood or the lungs. In dynamic equilibrium a reaction is producing the products and reactants at the same rate. Ex: water vapour is producing liquid water at the same rate that liquid water produces vapour. The concentrations of both the reactants and products stay the same at equilibrium. (Cabin Tom 13:57, 29 January 2006 (UTC))

Contents 1 Closed system 2 Dynamic Thinking 3 Static Equilibrium 4 Economic 5 WikiProject class rating

[edit] Closed system

I don't think that closed system boundary conditions need apply for a dynamic equilibrium to exist. For example, in my line of work, ecological modelling, we often have systems in which state variables remain constant, while material (and energy for that matter) enters and leaves the model. All that matters (as I understand things) is that state variables are constant (or constrained within some periodic or quasi-periodic orbit) but remain there as a function of balancing processes. Comments? --Plumbago 08:08, 31 March 2006 (UTC)

In terms of a chemical reaction (the main focus of this article) in order to achieve dynamic equilibrium the reaction must be in a closed system. Referring to the bucket of water example given, if the bucket was not kept in a closed (perfectly sealed) room then the water vapour would be able to float out the door and into the world which wouldn't strictly be a closed system as the water vapour would be acted on by other forces (the sun, wind and the such). So in an open system the water vapour would float off and would not have such a large rate of condensing back into the water. So yes in order to achieve dynamic equilibrium in a chemical reaction it must take place in a closed system. Lastsal 09:59, 28 May 2007 (UTC)

[edit] Dynamic Thinking

I'm not sure how to see who wrote this but their interpretation of dynamic equalibrium using the bucket of water model helped a lot. This is something I've never really thought of and that example helped. Thanks.

[edit] Static Equilibrium

Should static equilibrium really redirect to Mechanical equilibrium ... is there any such thing as static equilibrium outside of mechanics?

Yes, it's used in economics. -- Beland 03:47, 6 July 2007 (UTC)

[edit] Economic

Please help improve this article or section by expanding it. Further information might be found on the talk page or at requests for expansion. (July 2007)

This article doesn't really cover the economic concept of dynamic equilibrium in enough detail. -- Beland 03:46, 6 July 2007 (UTC)

[edit] WikiProject class rating

This article was automatically assessed because at least one WikiProject had rated the article as start, and the rating on other projects was brought up to start class. BetacommandBot 09:48, 10 November 2007 (UTC)