Complete the following 2 A l 2 O 3 + 3 C → 4 A + 3 B . A & B are as follows. Options: A . &nbsp Al, CO B . &nbsp CO, Al C . &nbsp Al, C O 2 D . &nbsp C O 2 , A l

Complete the following 2Al2O3+3C→4A+3B. A & B are as follows.

Discussion Forum : General Principles And Process Of Isolation Of Elements

Question -

Complete the following

$2 A l_{2} O_{3} + 3 C \to 4 A + 3 B$ . A & B are as follows.

Options:

A . Al, CO

B . CO, Al

C . Al,

C O_{2}

D .

C O_{2}, A l

Answer: Option C
:
C

Alumina reacts with carbon or coke to form Aluminium and carbon dioxide.

$2 A l_{2} O_{3} + 3 C \to 4 A l + 3 C O_{2}$

This is not used to extract aluminium as the (very high) temperature makes the process economically unviable. Also, at such elevated temperatures (2000 $^{0} C$ ), aluminium could react with coke (carbon) to form aluminium carbide.

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Discussion Forum : General Principles And Process Of Isolation Of Elements

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