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Chemistry
What would you observe if excess of dilute NaOH solution is added and shaken with an aqueous solution of aluminium chloride?
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Q. What would you observe if excess of dilute $NaOH$ solution is added and shaken with an aqueous solution of aluminium chloride?
The p-Block Elements
A
A permanent white precipitate is formed immediately.
17%
B
No change at first but a white precipitate is formed on standing.
28%
C
A white precipitate is formed which later dissolves.
50%
D
a green precipitate which turns red on standing in air.
6%
Solution:
$AlCl_3 + 3NaOH \rightarrow Al(OH)_3 + 3NaCl$
$Al(OH)_3 + NaOH \rightarrow \underset{\text{soluble}}{NaAlO_2}+ 2H_2O$