Reducing and Oxidizing Agents

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Emily Kennedy 4L
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Joined: Fri Sep 28, 2018 12:25 am
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Reducing and Oxidizing Agents

Postby Emily Kennedy 4L » Sun Feb 24, 2019 9:33 pm

How can something be both the Reducing and Oxidizing agent?

Dina Geotas 4A
Posts: 61
Joined: Fri Sep 28, 2018 12:29 am

Re: Reducing and Oxidizing Agents

Postby Dina Geotas 4A » Sun Feb 24, 2019 10:00 pm

A reactant is both the reducing and oxidizing agent when it's used to form both products. For example, 2H2O2 -> 2H2O + O2

Andrew Bennecke
Posts: 62
Joined: Fri Sep 28, 2018 12:15 am

Re: Reducing and Oxidizing Agents

Postby Andrew Bennecke » Sun Feb 24, 2019 10:03 pm

If the single reactant has two products in the given equation, we look at the oxidation numbers of each element within each compound. For example, in
Br2 (l) -> BrO3- (aq) + Br- (aq), the Br on the reactant side has an Oxidation number of 0, because it is a diatomic molecule. The Br within BrO3- has an oxidation number of 5+ while the Br within the Br- has an oxidation number of 1-. Therefore, since the oxidation number of Br increases from Br2 to Bro3-, Br2 is the reducing agent while the oxidation number decreases from Br2 to Br-, making Br2 the oxidizing agent in this case. Since Br2 oxidizes in one half reaction and reduces in the other half reaction, it is both a reducing agent and oxidizing agent.

505211599
Posts: 60
Joined: Fri Sep 28, 2018 12:28 am

Re: Reducing and Oxidizing Agents

Postby 505211599 » Sun Feb 24, 2019 10:21 pm

A reactant can be both a reducing and oxidizing agent when it is used in forming products with different oxidation states.


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