Understand the Mystery of MgO: Magnesium + Oxygen Chemistry

  • Thread starter Thread starter Faiien
  • Start date Start date
  • Tags Tags
    Chemical Formulas
Click For Summary

Discussion Overview

The discussion revolves around the chemical reaction between magnesium and oxygen to form magnesium oxide, specifically addressing the stoichiometry of the reaction and the representation of oxygen in the formula. Participants explore the correct formulation and balancing of the reaction equation.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • One participant questions why the formula for magnesium oxide is MgO instead of MgO2, expressing confusion about the number of oxygen atoms involved in the reaction.
  • Another participant explains that magnesium loses two electrons and oxygen gains two electrons, leading to a neutral compound, MgO.
  • A different participant asserts that while the initial formulas are correct, the reaction needs to be balanced, suggesting the equation 2Mg + O2 -> 2MgO to accurately represent the reaction.
  • There is acknowledgment that the original question may have been misunderstood by some participants.

Areas of Agreement / Disagreement

Participants express differing views on the representation of the reaction, with some supporting the need for balancing the equation while others focus on the correctness of the formula MgO. The discussion remains unresolved regarding the initial confusion about the oxygen atoms.

Contextual Notes

There is a lack of consensus on the interpretation of the reaction's stoichiometry and the necessity of balancing the equation, indicating potential gaps in understanding among participants.

Faiien
Messages
11
Reaction score
0
So I'm taking chemistry again after a five hear hiatus from the topic and I would really appreciate an explanation on a certain formula.

magnesium +oxygen forms magnesium oxide
Mg+O2=MgO
My question is, what happened to the 1 of the oxygen atoms?
Shouldn't it be MgO2?
 
Last edited:
Chemistry news on Phys.org
Faiien said:
So I'm taking chemistry again after a five hear hiatus from the topic and I would really appreciate an explanation on a certain formula.

magnesium +oxygen forms magnesium oxide
Mg+O2=MgO
My question is, what happened to the 1 of the oxygen atoms?
Shouldn't it be MgO2?


you shud write Mg and O in separate ion form = Mg^+2 + O^-2 = so, magnesium gives 2 electrons and oxygen takes 2 elctrons, the 2's cancel out = MgO. You have to realize that the end molecule has a net charge of zero, its electrically neutral.
 
Faiien said:
magnesium +oxygen forms magnesium oxide
Mg+O2=MgO

All three formulas are correct. However, this is just a skeletal reaction equation, that is - it contains correct formulas, but it is not yet correct otherwise.

My question is, what happened to the 1 of the oxygen atoms?
Shouldn't it be MgO2?

No, formula is correct and it shouldn't be modified. Where is the oxygen? Reaction should be balanced - that is, you should add stoichiometric coefficients so that number of atoms of all elements on both sides is identical:

2Mg + O2 -> 2MgO

Now everything is OK.

--
 
Borek said:
All three formulas are correct. However, this is just a skeletal reaction equation, that is - it contains correct formulas, but it is not yet correct otherwise.



No, formula is correct and it shouldn't be modified. Where is the oxygen? Reaction should be balanced - that is, you should add stoichiometric coefficients so that number of atoms of all elements on both sides is identical:

2Mg + O2 -> 2MgO

Now everything is OK.


--
ChemBuddy chemical calculators - buffer calculator, stoichiometry calculator
www.ph-meter.info - ph meter, ph electrode[/QUOTE


Yes its right. But i was not sure what you were asking in the original question:)
 
Me?

--
 
Haha, ah I see now, thank you everyone.
 

Similar threads

  • · Replies 10 ·
Replies
10
Views
18K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 19 ·
Replies
19
Views
9K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 28 ·
Replies
28
Views
5K
Replies
5
Views
8K
Replies
1
Views
5K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 6 ·
Replies
6
Views
18K