Can covalent bonds in water break by pushing them on a solid?

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Discussion Overview

The discussion centers on the behavior of water molecules in the presence of a static electric field, particularly regarding their interaction with a solid surface, such as a noble metal. Participants explore whether applying pressure through an electric field could lead to the breaking of covalent bonds in water or induce reactions with the solid surface.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the behavior of water molecules under an electric field and whether this could create pressure on a solid surface, potentially leading to the breaking of covalent bonds.
  • Another participant notes that water molecules become ordered in an electric field and references the concept of a double layer.
  • A different participant clarifies that the bonds in water are hydrogen bonds, not covalent, but acknowledges that pressure could influence reactions, suggesting that high pressure might induce oxidation reactions with the solid surface.
  • One participant provides a link to information on supercritical water oxidation, possibly as a related concept.
  • Another participant disputes the characterization of the bonds, asserting that the O-H bonds in a water molecule are primarily covalent, despite the complexity introduced by hydrogen bonding in solution.
  • A participant shares a visual representation related to their inquiry, indicating a desire for clarification or illustration of their question.

Areas of Agreement / Disagreement

Participants express differing views on the nature of the bonds in water, with some asserting they are covalent and others insisting they are hydrogen bonds. The discussion remains unresolved regarding the effects of pressure and electric fields on these bonds and reactions with solid surfaces.

Contextual Notes

There are unresolved assumptions regarding the definitions of covalent and hydrogen bonds, as well as the specific conditions under which pressure might influence chemical reactions.

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How do water molecules behave in the presence of a static electric field?

If I apply an electric field on water molecules, would they apply pressure to a solid surface (let's say a noble metal), and if so, what would happen? Could the oxygen wedge in between the atomic gaps on the surface of the solid? If the pressure is large enough, could the covalent bonds break?
 
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material said:
How do water molecules behave in the presence of a static electric field?

They get ordered. Google for double layer.
 
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the H-O-H bonds are hydrogen bonds, not covalent, but that doesn't answer your question.

from the Gibbs Free Energy perspective, pressure can have effect like temperature does, so there might be a critical pressure associated with an energy of reaction. I.e. having the oxygen react with the solid surface. What you're asking is if pressure can induce an oxidation reaction.
Yes, Probably.
 
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Hyo X said:
the H-O-H bonds are hydrogen bonds, not covalent

That's not true. In a single, separated water molecule O-H bond is a mostly covalent one (with - as it is always the case - some ionic character). In solution things get more complicated, as water molecules interact by hydrogen bonds and hydrogen atoms are moving between molecules, but it still doesn't make all O-H bonds hydrogen bonds.
 
What i am asking presented in a picture

http://img818.imageshack.us/img818/239/roov.jpg
 
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