Lord kelvin described the concept of absolute zero temperature and the laws relating the change in thermal energy during chemica
1 answer:
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Explanation:
The number acquired by an element after the lose or gain of an electron is called oxidation number.
For example,
Here, oxidation number of Fe(s) is 0 and Fe in is +3.
Oxidation number of O in is 0 as it is present in its elemental state.
The oxidation number of O in is calculated as follows.
Hence, oxidation number of O in is -2.
- The loss of electrons by an element or substance is called oxidation. Here, electrons are being lost by Fe(s) as an increase in oxidation state is occurring. So, Fe(s) is oxidized.
- The gain of electrons by an element or substance is called reduction. Here, electrons are being added to
as a decrease in its oxidation state is occurring. So,
- An element or compound which is being reduced is called oxidizing agent. Here,
- An element or compound which is being oxidized is called reducing agent. Here, Fe(s) is the reducing agent.