When are atoms and molecules unpredictable in chemistry?

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Discussion Overview

The discussion revolves around the predictability of chemical and molecular bonding, particularly in the context of specific examples involving hydrogen, oxygen, and carbon. Participants explore when the outcomes of chemical reactions can be considered unpredictable.

Discussion Character

  • Exploratory, Debate/contested, Conceptual clarification

Main Points Raised

  • One participant questions the predictability of outcomes when combining specific amounts of hydrogen, oxygen, and carbon, seeking examples of unpredictability in chemical bonding.
  • Another participant suggests that while predicting equilibrium states is theoretically possible, the practical data required for accurate predictions is often unavailable, indicating a limitation in predictability.
  • A participant expresses confusion about whether the behavior of free molecules and atoms can always be predicted, prompting further clarification on the nature of chemical behavior.
  • It is noted that predicting the behavior of a specific atom or molecule in a given context is not feasible, referencing concepts like "the drunkard's walk" to illustrate unpredictability in atomic behavior.

Areas of Agreement / Disagreement

Participants appear to have differing views on the predictability of chemical behavior, with some suggesting that equilibrium states can be predicted under certain conditions, while others emphasize the inherent unpredictability of specific atomic behavior.

Contextual Notes

The discussion highlights limitations related to the availability of data for predicting chemical outcomes and the complexities involved in understanding atomic behavior in specific scenarios.

Silvershadow
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I'm playing with a theory I have at the moment and wondered if anyone could help with giving me some good examples of chemical/molecular bonding in which the partners' an atom will acquire are unpredictable.
For example if I had 1g of Hydrogen atoms, 8g of oxygen atoms and 3g of carbon would the end result be predictable. If not when are such examples 'unpredictable'?

Silvershadow
 
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"Predictable?" In principle, yes; in practice, for the C-H-O system (or other system), the data/information required for predicting equilibrium composition, free energies of formation for ALL possible products, is not available. Same thing for any other chemical system --- there is one equilibrium state for any specified overall/total composition and T,P,ρ.
 
I don't get it. This equilibrium state, is it always predictable that free molecules and atoms will act a certain way?

Silvershadow
 
Originally posted by Silvershadow
I don't get it. This equilibrium state, is it always predictable that free molecules and atoms will act a certain way?

Silvershadow

It's called "chemistry." If you mean, "Can the behavior of a specific, labelled atom be predicted?" the answer is no. The example would be predicting the location of an atom or molecule in a container --- see "the drunkard's walk."
 

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