re-dox reaction question

[dentalstudent2021]

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4VO^2+(aq) + O2(g) + 2H2O(l)

4VO2^+(aq) + 4H+(aq)

thought VO2+ is oxidizing agent. but O2 is...so can anyone explain why VO2+ is not ?

edit: the reactant is VO^2+ and product is VO2 ^ +

so, I understand why O2 is oxidizing agent. but confused about VO , is it because VO gains an Oxygen and thus acts as a reducing agent ?

 

[DAT Destroyer]

4VO2+(aq) + O2(g) + 2H2O(l)

4VO2+(aq) + 4H+(aq)

thought VO2+ is oxidizing agent. but O2 is...so can anyone explain why VO2+ is not ?

An oxidizing agent is a specie that gains electrons, hence is being reduced. The O2 begins with an oxidation state of zero, and become minus 2.. The number has decreased, thus it is reduced,,,,,and therefore the oxidizing agent.

Hope this helps.

Dr. Jim Romano

 

[KoonS]

VO2+ did not change in its oxidation state. +4-->+4

 

[dentalstudent2021]

An oxidizing agent is a specie that gains electrons, hence is being reduced. The O2 begins with an oxidation state of zero, and become minus 2.. The number has decreased, thus it is reduced,,,,,and therefore the oxidizing agent.

Hope this helps.

Dr. Jim Romano

Thank You.
so, I understand why O2 is oxidizing agent. but confused about VO , is it because VO gains an Oxygen and thus acts as a reducing agent ?

 

[DAT Destroyer]

Thank You.
so, I understand why O2 is oxidizing agent. but confused about VO , is it because VO gains an Oxygen and thus acts as a reducing agent ?

VO2 here does not change a charge, therefore it cannot act as a reducing agent.

 

[dentalstudent2021]

VO2 here does not change a charge, therefore it cannot act as a reducing agent.

It goes from VO^ 2+ to VO2^ +.
product gains an Oxygen.

 

[DAT Destroyer]

VO2 here does not change a charge, therefore it cannot act as a reducing agent.

Oh, sorry I did not see the edit
In the updated equation, V goes from +4 charge to +5, therefore it is Oxidized. If so, it can not be an oxidizing agent.

Hope this helps.

 

[dentalstudent2021]

Oh, sorry I did not see the edit
In the updated equation, V goes from +4 charge to +5, therefore it is Oxidized. If so, it cannot.be an oxidizing agent.

Hope this helps.

Thank You very much!

 

[DAT Destroyer]

Thank You very much!

You are welcome and glad we got it figured out!

Good luck in your studies and on the DAT, if you have more questions feel free to post and I will get to them asap.

Dr. Romano

 

[clutchfans]

If O2 is in the reaction, it is always the oxidizing agent. Oxy=oxygen.
Also O2 got reduced to H2O. So O2 has to be the oxidizing agent.
Remember bonds formed with oxygen and broken with H usually results in oxidation.
Bonds broken with O and formed with H usually results with reduction.