Answer:
Reducing agent: nitrogen.
Oxidizing agent: chromium.
Explanation:
Hello,
In this case, the first step is to rewrite the undergoing chemical reaction indicating the oxidation state for each atom as shown below:
In such a way, we observe the following half-reactions:
* Reduction as chromium undergoes a decrease in its oxidation state:
* Oxidation as nitrogen undergoes an increase in its oxidation state:
In such a way, we state that the nitrogen is the reducing agent as it is oxidized and chromium the oxidizing agent as it is reduced, therefore, the balanced chemical reaction turns out:
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