First slide

Anomalous properties of Boron

Question

Heating of aqueous solution of aluminium chloride to dryness will give :

Moderate

A

AlCl₃
B

Al₂Cl₆
C

Al₂O₃
D

Al(OH)Cl₂

Solution

$2 {[Al {(H_{2} O_{6})}_{6}]}^{3 +} {({Cl}^{-})}_{3} \overset{Δ}{\to} {Al}_{2} O_{3} + 9 H_{2} O + 6 HCl$

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