How Does Hydrogen Act as a Proton Donor in Bronsted-Lowry Theory?

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Discussion Overview

The discussion centers around the role of hydrogen as a proton donor within the context of the Bronsted-Lowry theory of acids and bases. Participants explore the implications of hydrogen's atomic structure and its relationship to proton donation in chemical reactions, particularly focusing on hydrochloric acid (HCl) as an example.

Discussion Character

  • Homework-related
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about how hydrogen, having only one proton, can donate a proton without losing its identity as an atom.
  • Another participant suggests that the entire HCl molecule acts as the proton donor, indicating that HCl dissociates into H+ and Cl-.
  • A third participant clarifies that it is HCl that donates the proton, and notes that the hydrogen ion (H+) is equivalent to a proton.
  • A later reply acknowledges that hydrogen is considered a proton when it has no electrons, indicating a shift in understanding.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the phrasing of hydrogen's role in proton donation, with some emphasizing the molecule's role (HCl) while others focus on the hydrogen ion itself. The discussion remains unresolved regarding the conceptual understanding of hydrogen as a proton donor.

Contextual Notes

There are limitations in the discussion regarding the atomic structure of hydrogen and the definitions of proton donation, which may lead to misunderstandings about the nature of hydrogen ions and their role in acid-base chemistry.

MichaelXY
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[SOLVED] Bronsted Lowry Proton Theory

Homework Statement



Bronsted Lowry Proton Theory
Acid is a proton H+ donor

Homework Equations



In my book. HCL + HOH ----> HOH + Cl My book says the HCL donates a proton.

The Attempt at a Solution


What I really do not get about this is that Hydrogen atom only has one proton, based on the periodic chart. If hydrogen gives up one proton, then it would seem that the atom would be only a Neutron and not be an atom at all. Ugh, I just don't get it. Am I seeing this all wrong? Is the Hydrogen in fact losing its only proton?
 
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The way I see it,the whole acid molecule is proton donor i.e. H+ donor, so HCl splits up as H+ and Cl-, donates the H+, and hence acts as an acid. So I don't understand what you mean by saying that hydrogen donates a proton.
 
The hydrogen does not donate a proton; the HCl (hydrochloric acid) donates a proton. The hydrogen ion IS the proton.
 
Oh I see, the hydrogen is the proton because it has no electron. Ok thanks for the help:)
 

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