Q.
Aluminium vessels should not be washed with materials containing washing soda because:
see full answer
Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!
Real Strategies. Real People. Real Success Stories - Just 1 call away
An Intiative by Sri Chaitanya
a
Washing soda reacts with aluminium to form soluble aluminate.
b
Washing soda is expensive.
c
Washing soda is easily decomposed.
d
Washing soda reacts with aluminium to form insoluble aluminium oxide.
answer is A.
(Unlock A.I Detailed Solution for FREE)
Ready to Test Your Skills?
Check your Performance Today with our Free Mock Test used by Toppers!
Take Free Test
Detailed Solution
Aluminium vessels should not be washed with materials containing washing soda since washing soda reacts with aluminium to form soluble aluminate. Under normal circumstances, aluminum does not react with water, as an impermeable protective layer composed of aluminum hydroxide either forms within seconds or is already in place. With the addition of sodium hydroxide, the formation of a protective layer is prevented. With the production of aluminates Al(OH)4-, the amphoteric (capable of acting as either an acid or a base) aluminum hydroxide Al(OH)3 goes in solution.The reaction is as follows:2Al + 6H2O → 2Al(OH)3 + 3H2Al(OH)3 + NaOH → Na+ + [Al(OH)4]−
Watch 3-min video & get full concept clarity