Answer: Oxidising agent.
- A Oxidising agent
- B Reducing agent only
- C Acid
- D Base
Correct answer: A. Oxidising agent
Explanation: H<sub>2</sub>O<sub>2</sub> is primarily an oxidising agent; it can also act as a reducing agent in reactions with stronger oxidants.
Each water molecule's O-H bonds (covalent, solid) can hydrogen-bond (dashed) to neighbouring molecules, forming an extended network responsible for water's unusually high boiling point and density anomaly.
Concept context
The simplest and most abundant element in the universe. Study its unique position in the periodic table, isotopes (protium, deuterium, tritium), properties of water and hydrogen peroxide, and industrial uses.