Question

The fast reaction between water and sodium is the example of?

• A. Oxidation
• B. Reduction
• C. Intermolecular redox
• D. Intramolecular redox

Answer 1

Answer: (C)

Intermolecular redox

In an intermolecular redox reaction, oxidation-reduction takes place when molecules of two different substances react with each other.

$2Na+2H_{2}O⟶2NaOH+H_2$

Here hydrogen is reduced from +1 oxidation state to 0 oxidation state, and sodium is oxidised from 0 to +1 oxidation state.

Hence, the above reaction is an intermolecular redox reaction.