Extraction of Metals - Result Question 35
####35. In the commercial electrochemical process for aluminium extraction, the electrolyte used is
$(1999,2 M)$
(a) $Al(OH) _3$ in $NaOH$ solution
(b) an aqueous solution of $Al _2\left(SO _4\right) _3$
(c) a molten mixture of $Al _2 O _3$ and $Na _3 AlF _6$
(d) a molten mixture of $AlO(OH)$ and $Al(OH) _3$
Show Answer
Solution:
- $Al _2 O _3$ mixed with cryolite $Na _3\left[AlF _6\right]$ is fused and electrolysed in the extraction of $Al$.
