Answer:
The Fe increases its oxidation number from 0 to +2, it means that electrons are lost, therefore the Fe is the reducing agent and is the oxidized substance.
Explanation:
1. First write down the chemical equation:
2. Then determine the oxidation numbers for each compound:
3. Write the elements that change its oxidation number:
-
→
The H decreases its oxidation number from +1 to 0, it means that electrons are gained, therefore the H is the oxidizing agent and is the reduced substance.
-
→
The Fe increases its oxidation number from 0 to +2, it means that electrons are lost, therefore the Fe is the reducing agent and is the oxidized substance.