Redox Reactions

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105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

Redox Reactions

Postby 105311039 » Tue Feb 18, 2020 7:28 pm

how do you identify in redox reactions the reducing and oxidized reagents? I having trouble with this, does anyone have any tips?

Aman Sankineni 2L
Posts: 103
Joined: Fri Aug 30, 2019 12:17 am

Re: Redox Reactions

Postby Aman Sankineni 2L » Tue Feb 18, 2020 7:29 pm

An oxidizing agent is the substance that causes the oxidation in another substance. Common oxidizing agents include oxygen, hydrogen peroxide and halogens. A reducing agent is a substance that causes another substance to reduce. So to identify an oxidizing agent, simply look at the oxidation number of an atom before and after the reaction. If the oxidation number is greater in the product, then it lost electrons and the substance was oxidized. If the oxidation number is less, then it gained electrons and was reduced. The substance that is reduced in a reaction is the oxidizing agent because it gains electrons. The substance that is oxidized in a reaction is the reducing agent because it lost electrons.

105311039
Posts: 107
Joined: Fri Aug 02, 2019 12:16 am

Re: Redox Reactions

Postby 105311039 » Tue Feb 18, 2020 7:37 pm

Aman Sankineni 2L wrote:An oxidizing agent is the substance that causes the oxidation in another substance. Common oxidizing agents include oxygen, hydrogen peroxide and halogens. A reducing agent is a substance that causes another substance to reduce. So to identify an oxidizing agent, simply look at the oxidation number of an atom before and after the reaction. If the oxidation number is greater in the product, then it lost electrons and the substance was oxidized. If the oxidation number is less, then it gained electrons and was reduced. The substance that is reduced in a reaction is the oxidizing agent because it gains electrons. The substance that is oxidized in a reaction is the reducing agent because it lost electrons.

Thank you so much for this! One last thing, do I look at the oxidation numbers of the half reactions? Or the oxidation numbers of the final redox reaction?


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