Question

The complex formed with $A{l}_2{O}_3$ is leached from bauxite using concentrated $NaOH$ solution is:

• A. $Na\left[Al\right(OH{)}_4]$
• B. $NaA{l}_2{O}_4$
• C. $N{a}_2\left[Al\right(OH{)}_3]$
• D. $N{a}_{2}Al{O}_2$

Answer 1

The correct option is A $Na\left[Al\right(OH{)}_4]$

$A{l}_2{O}_3+2NaOH+3H_{2}O\to 2Na\left[Al\right(OH{)}_4]$

$Na\left[Al\right(OH{)}_4]$ is formed when $A{l}_2{O}_3$ is leached from bauxite using concentrated $NaOH$ solution.