Question

${Al}_2{O}_3$ + $6HCl$ $\to$ $2Al{Cl}_3$ + $3H_{2}O$

${Al}_2{O}_3$ + $2NaOH$ $\to$ $2NaAl{O}_2$ + $H_{2}O$

(Sodium aluminate)

From the above reactions, you can conclude that _______.

• A. Aluminum oxide is amphoteric.
• B. Acid will give water.
• C. Base contains H⁺.
• D. Water is in between acid and base.

Answer 1

The correct option is A

Aluminum oxide is amphoteric.

Metal oxides which react with both acids as well as bases to produce salts and water are known as amphoteric oxides.

Aluminium on reaction with Oxygen forms $A{l}_2{O}_3$. This metal oxide shows both acidic as well as basic behavior.