Question

Aluminium oxide reacts with sulphuric acid to form :

• A. Aluminium sulphate and hydrogen
• B. Aluminium sulphate and oxygen
• C. Aluminium sulphate and water
• D. Aluminium sulphate and sulphur oxide

Answer 1

The correct option is C

Aluminium sulphate and water

Explanation:

• Generally, Oxides of metals are basic in nature but aluminium oxide is an amphoteric oxide.
• So, an amphoteric aluminium oxide reacts with Sulphuric acid from aluminium sulphate and water.
• Since salt and water are produced from the above reaction by neutralization of amphoteric oxide. Hence, this is an example of a Neutralization reaction.

The balanced chemical reaction is: $\underset{\mathrm{Aluminium}\mathrm{oxidee}}{{\mathrm{Al}}_2{\mathrm{O}}_3}+\underset{\mathrm{Sulphuric}\mathrm{acid}}{3{\mathrm{H}}_2{\mathrm{SO}}_4}\to \underset{\mathrm{Aluminium}\mathrm{sulphate}}{{\mathrm{Al}}_2{\left({\mathrm{SO}}_4\right)}_3}+\underset{\mathrm{Water}}{3{\mathrm{H}}_2\mathrm{O}}$

Hence, option (C) is correct.