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Sulphuric Acid

Al2O3 can be ...

Question

$A l_{2} O_{3}$ can be converted into anhydrous $A l C l_{3}$ by heating :

a mixture of

A l

in dry

C l_{2}

gas

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A l_{2} O_{3}

with

C l_{2}

gas

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A l_{2} O_{3}

with

H C l

gas

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A l_{2} O_{3}

with

N a C l

solid state

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Solution

The correct option is C $A l_{2} O_{3}$ with $H C l$ gas
$A l_{2} O_{3} + 6 H C l \to 2 A l C l_{3} + 3 H_{2} O$
$A l (O H)_{3} + 3 H C l \to A l C l_{3} + 3 H_{2} O$

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