The ore from which aluminum is extracted must first be treated with so that pure aluminum oxides can be obtained.

Open in App

Solution

Aluminum is extracted from bauxite ore.
The ore is treated with concentrated $NaOH$ which dissolves the oxides of aluminum and remains the impurities insoluble.
${Al}_{2} O_{3} \cdot 2 H_{2} O (s) + 2 NaOH (aq) \to 2 {NaAlO}_{2} (aq) + 3 H_{2} O (l) Bauxite concen . sodium meta sodium hydroxide aluminate$
Hence, The ore from which aluminum is extracted must first be treated with concentrated $NaOH$ so that pure aluminum oxides can be obtained.

Suggest Corrections

Similar questions

(a) A to F below relate to the source and extraction of either zinc or aluminium:

A.Bauxite, B.Coke,

C. Cryolite D.Froth floatation, E.Sodium hydroxide solution, F.Zinc blende.

(i) Write down the three letters each from the above list which are relevant to:

1.Zinc, 2.Aluminium.

(ii) Fill in the blanks using the most appropriate words form A to F.

1.The ore from which aluminium is extracted must first be treated with ...................so that pure aluminium oxide can be obtained.

2.Pure aluminium oxide is dissolved in .............. to make a conducting solution.
(iii) Write the formula of cryolite.

Q. A to F below relate to the source and extraction of either zinc or aluminium.
A. bauxite
B. coke
C. cryolite
D. froth flotation
E. sodium hydroxide solution
F. zinc blende.
(a) Write down the three letters each from the above list which are relevant to:
(i) zinc
(ii) aluminium
(b) Fill in the blanks using the most appropriate words from A to F:
(i) The ore from which aluminium is extracted must first be treated with _________ so that pure aluminium oxide can be obtained.
(ii) Pure aluminium oxide is dissolved in _________ to make a conducting solution.
(c) Write the formula of cryolite.

Q. The ore from which aluminium is extracted must first be treated with ________ so that pure Aluminium oxide can be obtained.

A to F below relate to the source and extraction of either zinc or aluminium:A. Bauxite
B. Coke
C. Cryolite
D. Froth floatation
E. Sodium hydroxide solution.
F. Zinc blend
Fill in the blanks using the most appropriate words from A to F.

The ore from which aluminum is extracted must first be treated with ___________ so that pure aluminium oxide can be obtained

Aluminum is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.
Name a chemical used for dissolving aluminum oxide. In which state of sub-division is the chemical used?

Join BYJU'S Learning Program