Question

bauxite has the composition _____ a. Al2O3 b.none c.Fe2O3.2H2O d.Al2O3 nH2O​

Answer 1

Correct option is

A

corundum

Al

2

O

3

.2H

2

O

calcination

Al

2

O

3

(Corundum)+2H

2

O

Aluminium oxide (Corundum) is a chemical compound of aluminium and oxygen with the chemical formula Al

2

O

3

. It is the most commonly occurring of several aluminium oxides, and specifically identified as aluminium(III) oxide. It is commonly called alumina.

Answer 2

Answer:

Bauxite has the composition $Al_{2} O_{3}nH_{2}O$.

The correct answer is option d. $Al_{2} O_{3}nH_{2}O$.

Explanation:

Bauxites are residually enriched rocks that arise from strong lateritic weathering of aluminosilicate protoliths and are largely composed of $Al-$hydroxides (gibbsite, boehmite, and diaspore), kaolinite, Fe-oxy-hydroxides, and Ti -oxides.

The chemical makeup of bauxite is unknown. It's made up of insoluble elements like quartz, hematite, magnetite, siderite, and goethite, as well as hydrous aluminium oxides, aluminium hydroxides, clay minerals, and insoluble aluminium oxides. Gibbsite $Al(OH)_{3}$, boehmite $AlO(OH)$, and diaspore $AlO(OH)$ are some of the aluminium minerals found in bauxite $(OH)$.

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