Question

Aluminium vessels should not be washed with materials containing washing soda because:

• A. Washing soda reacts with aluminium because the latter is amphoteric.
• B. Washing soda is expensive
• C. Washing soda is easily decomposed
• D. Washing soda reacts with aluminium to form insoluble aluminium oxide

Answer 1

The correct option is A Washing soda reacts with aluminium because the latter is amphoteric.

Aluminium metal - just like the oxide and the hydroxide - reacts with both acids and bases.