Positive Hydrogen Ion = Proton?

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Discussion Overview

The discussion centers on the nature of a positive hydrogen ion and whether it can be considered equivalent to a proton. Participants explore the implications of this equivalence in various contexts, including its behavior in water and its role in acid-base chemistry.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • Some participants assert that a positive hydrogen ion, lacking electrons and neutrons, is simply a proton.
  • Others note that in aqueous solutions, protons often associate with water molecules, forming hydronium ions (H3O+), which complicates the direct equivalence to a proton.
  • It is mentioned that in the context of Bronsted acids and bases, the terms "proton donors" and "proton acceptors" are commonly used, reinforcing the idea of protons as fundamental entities in acid-base reactions.
  • Some participants discuss the dynamic nature of protons in water, highlighting that they can move between water molecules and that this behavior is distinct from other compounds.
  • There is a suggestion that while H3O+ is commonly accepted, larger conglomerates of protons in water have also been proposed and observed, indicating ongoing exploration in this area.

Areas of Agreement / Disagreement

Participants generally agree on the equivalence of a positive hydrogen ion and a proton, but there are multiple competing views regarding the behavior of protons in water and the implications of their interactions.

Contextual Notes

The discussion highlights the complexity of proton behavior in aqueous solutions, including the weak attachment to water molecules and the potential existence of larger proton conglomerates, which may influence interpretations of proton equivalence.

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Hello;

Is this statement true? A hydrogen positive ion would have no electrons, and pure hydrogen itself has no neutrons. Therefore, would it simply be a proton?

Thanks.
 
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Yes. Small complication - in water the proton is often attached to a water molecule, rather than by itself.
 
Yes. When talking about Bronsted acids and bases one talks about proton donors and proton acceptors..
 
mathman said:
Yes. Small complication - in water the proton is often attached to a water molecule, rather than by itself.

Note that this "attachement" is reatively weak. Protons are "jumping" between water molecules all the time. When compared with other compounds water molecules are "short living" - for example is you mix equimolar amounts of heavy water with normal water after few minutes you will have mixture containing H2O, HDO and D2O in 1:2:1 ratio.

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methods
 
Yes, as long as the atom isn't deuterium or tritium.
 
Borek said:
Note that this "attachement" is reatively weak. Protons are "jumping" between water molecules all the time. When compared with other compounds water molecules are "short living" - for example is you mix equimolar amounts of heavy water with normal water after few minutes you will have mixture containing H2O, HDO and D2O in 1:2:1 ratio.

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chemical calculators - buffer calculator, concentration calculator
www.titrations.info - all about titration methods


What I meant by attach is to form H3O+
 
I know, and you are right - but it doesn't change the general picture. All protons in H3O+ are equivalent, so they all can move between water molecules. That is assuming H3O+ exists, as larger conglomerates has been suggested (and observed) as well.

Water is very dynamic, in a way much more than other liquids, as it is not just a matter of separate molecules bouncing each other, but also exchange of protons.

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methods
 

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