First slide

Uses of Boron & Aluminium

Question

Aluminium vessels should not be washed with materials containing washing soda since

Moderate

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

Solution

$\begin{gathered} N{a_2}C{O_3} + {H_2}O \to 2NaOH + C{O_2} \\\ 2NaOH + 2Al + 6{H_2}O \to 2Na[Al{\left( {OH} \right)_4}] + 3{H_2} \ \\ \end{gathered}$
Aluminium vessels should not be washed with materials containing washing soda since washing soda reacts with aluminium to form soluble sodium aluminate complex.

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