Amedeo Avogadro & Molar Ratios: Gases, Solids & Solutions

Click For Summary

Discussion Overview

The discussion revolves around the application of molar ratios in chemical reactions involving gases, solids, and aqueous solutions, specifically in the context of a reaction between magnesium and hydrochloric acid. Participants explore the implications of Amedeo Avogadro's hypothesis on these ratios.

Discussion Character

  • Technical explanation
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions whether molar ratios can be applied across different states of matter in a single equation.
  • Another participant asserts that in the provided reaction, a 1:1 ratio exists between moles of magnesium and moles of hydrogen gas produced, suggesting that doubling the amount of magnesium would yield double the hydrogen.
  • A participant seeks clarification on the connection between the reaction and Avogadro's hypothesis.
  • Another participant explains that the coefficients in the reaction indicate the ratio of substances involved, which can represent either moles or individual atoms/molecules.

Areas of Agreement / Disagreement

Participants express differing views on the applicability of molar ratios across different states of matter, with some supporting the idea while others raise questions about its validity. The discussion does not reach a consensus.

Contextual Notes

Participants do not fully explore the implications of Avogadro's hypothesis, and there are unresolved aspects regarding the interpretation of coefficients in chemical equations.

Mozart
Messages
106
Reaction score
0
Can I use molar ratios for gasses, solids, and aqueous solutions all in one equation?

For instance: Mg(s) + 2 HCL(aq) -> MgCl2(aq) + H2(g)

Can I say that if i had 2 moles of Mg I would have 2 moles of H2. Does this trick have anything to do with Amedeo Avogadro?
 
Chemistry news on Phys.org
Yes, you can do that.

In the reaction you gave,
Mg(s) + 2 HCL(aq) -> MgCl2(aq) + H2(g)
You can see that there is a 1:1 ratio for every mole of Mg reacted to Hydrogen gas produced. So if two moles of Mg were to react, 2 moles of H2 would be produced.
 
Thanks man.

Does this have anything to do with Avogadro's hypothesis?
 
Last edited:
The coeffients in the reaction are meant to show the ratio of each substance being reacted/produced.
The coeffients could mean the number of moles but they could also mean the number of individual atoms/molecules too.
 

Similar threads

  • · Replies 4 ·
Replies
4
Views
3K
  • · Replies 0 ·
Replies
0
Views
2K
Replies
2
Views
6K
Replies
8
Views
6K
Replies
2
Views
7K
Replies
5
Views
6K
  • · Replies 4 ·
Replies
4
Views
2K
Replies
2
Views
3K
  • · Replies 14 ·
Replies
14
Views
12K
  • · Replies 2 ·
Replies
2
Views
2K