Science, asked by khandvikarshilpa, 2 months ago

explain the process of extraction of aluminium with oxidation reduction reaction

Answers

Answered by ghuleanjali4
0

Answer:

Concentration of ore is done by baeyer's process using chemical method.

The electrolytic reduction of alumina is done by hall heroult's process. The reaction at cathode is : 2Al

3+

+6e

→2Al Thus pure aluminium metal is formed at the cathode.

Cryolite is sodium aluminium fluoride (Na

3

AlF

6

). It ia an ore of aluminium. Cryolite and fluorspar acts as an solvent.

Al(OH)

3

→Al

2

O

3

+water

The oxygen evolved at the anode escapes as a gas or reacts with the carbon anode. The anode is thus oxidized to carbon monoxide which either burns giving CO

2

or escapes. Thus, anode has to be replaced as it is consumed periodically.

Explanation:

Concentration of ore is done by baeyer's process using chemical method.

The electrolytic reduction of alumina is done by hall heroult's process. The reaction at cathode is : 2Al

3+

+6e

→2Al Thus pure aluminium metal is formed at the cathode.

Cryolite is sodium aluminium fluoride (Na

3

AlF

6

). It ia an ore of aluminium. Cryolite and fluorspar acts as an solvent.

Al(OH)

3

→Al

2

O

3

+water

The oxygen evolved at the anode escapes as a gas or reacts with the carbon anode. The anode is thus oxidized to carbon monoxide which either burns giving CO

2

or escapes. Thus, anode has to be replaced as it is consumed periodically.

Answered by pratishtha571
0

Answer:

Concentration of ore is done by baeyer's process using chemical method.

The electrolytic reduction of alumina is done by hall heroult's process. The reaction at cathode is : 2Al

3+

+6e

→2Al Thus pure aluminium metal is formed at the cathode.

Cryolite is sodium aluminium fluoride (Na

3

AlF

6

). It ia an ore of aluminium. Cryolite and fluorspar acts as an solvent.

Al(OH)

3

→Al

2

O

3

+water

The oxygen evolved at the anode escapes as a gas or reacts with the carbon anode. The anode is thus oxidized to carbon monoxide which either burns giving CO

2

or escapes. Thus, anode has to be replaced as it is consumed periodically.

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