Question

Define oxidation by three different ways with one suitable example of each

Answer 1

Answer:

Oxidation occurs when an atom, molecule, or ion loses one or more electrons in a chemical reaction.

When oxidation occurs, the oxidation state of the chemical species increases.

Oxidation doesn't necessarily involve oxygen! Originally, the term was used when oxygen caused electron loss in a reaction. The modern definition is more general.

Answer 2

Definitions of oxidation in three different ways with an example of each are;

1. In terms of electron transfer

Oxidation is the process in which an atom or ion loses electrons and that atom or ion is said to be oxidized.

This can be best explained through an example given below:

                             Fe       →       Fe²⁺   ₊    2e⁻

Here, Fe is oxidized to Fe²⁺.

2. In terms of oxygen transfer

Oxidation is defined as the addition of oxygen to the compound.

Example of reaction is as,

      Fe₂O₃   +   3CO   →    2Fe   +    3CO₂

Here, iron oxide(Fe₂O₃) is an oxidizing agent as it provides oxygen to carbon monoxide(CO) to form carbon dioxide (3CO₂). Thus, CO is oxidized to CO₂.

3. In terms of hydrogen transfer

If hydrogen is lost during the formation of a product, such type of reaction is called oxidation reaction,

      CH₃CH₂OH (ethanol)   →        CH₃CHO(ethanal)

Here, ethanol is oxidized to ethanal due to the loss of hydrogen.

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