First slide

13th group or boron group

Question

Aluminium vessel should not be washed with materials containing caustic soda because___?

Moderate

A

Washing soda is expensive
B

Washing soda easily decomposed
C

Washing soda reacts with Aluminium to form Aluminate
D

None of the above

Solution

Following reaction takes place
$2 A l + 2 N a O H + 6 H_{2} O \to 2 N a [A l {(O H)}_{4}] \to 2 N a A l O_{2} + 2 H_{2} O$

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