Which substance is the oxidizing agent in the following reaction? fe2s3 + 12hno3 → 2fe(no3)3 + 3s + 6no2 + 6h2o which substance is the oxidizing agent in the following reaction? fe2s3 + 12hno3 2fe(no3)3 + 3s + 6no2 + 6h2o fe2s3 fe(no3)3 h2o hno3 no2 request answer provide feedback

The oxidizing agent in the reaction that's given is HNO3.

An oxidizing agent is also referred to as an oxidant. It should be noted that an oxidizing agent gains electrons. It is also reduced during a chemical reaction.

An oxidizing agent has the ability to oxidize other substances and accept their electrons. In this case, the oxidizing agent in the reaction that's given is HNO3.

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HNO3 is the oxidizing agent

Explanation:

Step 1:

The oxidizing agent is responsible to oxidize another.  but  itself undergoes  a reduction  .

Fe2S3:

Fe has an oxidation number of +3

S has an oxidation number of -2

HNO3:

O has an oxidation number of -2 ( we have 3 times O so this makes -6)

H has an oxidation number of +1

N has an oxidation number of +5

Fe(NO3)3

O has an oxidation number of -2 ( we have 3 times O so this makes -6)

Fe has an oxidation number of +3

Since NO3 has an oxidation number of -1; N has an oxidation number of +5

S alone has an oxidation number of 0

NO2:

O has an oxidation number of -2 (we have 2 times O, this makes -4)

N has an oxidation number of +4

Fe doesn't change from oxidation number. It stays +3

N goes from +5 to +4 → this is a reduction

S goes from -2 to 0 → this is an oxidation

The reducing agent is the compound that contributes the oxidized species (S).

The oxidizing agent contributes the reducing species (N)

The answer is HNO3

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