Redox Question: Which is Best Reducing Agent?

  • Thread starter Thread starter geffman1
  • Start date Start date
  • Tags Tags
    Redox
Click For Summary

Discussion Overview

The discussion revolves around identifying the best reducing agent among given half-reactions and their standard electrode potentials. Participants explore the implications of standard potentials in the context of redox reactions.

Discussion Character

  • Homework-related, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks help in determining the best reducing agent from the provided half-reactions and their standard potentials.
  • Another participant suggests that the focus should be on which half-cell, when considered as a supplier of electrons, would yield the largest positive value.
  • A different participant proposes that magnesium might be the best reducing agent, noting that flipping the reaction changes the sign of the potential.
  • Another participant emphasizes the importance of understanding whether high or low potentials are needed for reduction and questions the classification of chlorine as an oxidizing or reducing agent.

Areas of Agreement / Disagreement

The discussion does not reach a consensus on which reducing agent is the best, as participants express differing views on the interpretation of standard potentials and their implications.

Contextual Notes

Participants have not fully resolved the implications of standard potentials, particularly regarding the relationship between reduction potentials and the classification of agents as oxidizing or reducing.

geffman1
Messages
67
Reaction score
0

Homework Statement



hey guys this question looks easy, but I am confused? any help/tips would be appreciated
Which of the following is the best reducing agent?

Cl2 + 2e- 2Cl-; E° = 1.36 V
Mg2+ + 2e- Mg; E° = -2.37 V
2H+ + 2e- H2; E° = 0.00 V




Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
You listed reaction half cells showing consumtion of electrons. What you want then is which half cell when written as a supplier of electrons would have the largest positive value?
 
would that be mg? cuase when you flip you change the sign?
 
Obviously it has something to do with standard potentials listed, isn't it? So the real question is, do you need high or low potential for reduction... Is chlorine an oxidizing, or reducing agent? Once you will know answer, you will know which end of the scale is which.
 

Similar threads

Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 2 ·
Replies
2
Views
4K
Replies
7
Views
3K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 5 ·
Replies
5
Views
5K
  • · Replies 4 ·
Replies
4
Views
10K
  • · Replies 2 ·
Replies
2
Views
6K
Replies
1
Views
2K
Replies
4
Views
5K