On passing CO2 integralo aqueous solution containing Al3+: | CHEMISTRY - USES OF BORON AND ALUMINIUM AND THEIR COMPOUNDS | SolveeIt | Solveeit

Today, August 18

Question

On passing CO2 into aqueous solution containing Al3+:

A

Al2(CO3)3 is formed

B

Al(OH)3 is precipitate

C

Al2O3 is formed

D

Collodial Al(OH)3 is formed

Answer

Al(OH)3 is precipitate

Explanation

Solution

CO2 + H2O $\longrightarrow$ H2CO3 $\rightleftharpoons$ CO32– + 2H+

3CO32– + 3H2O + 2Al3+ $\longrightarrow$ 2Al(OH)3¯ (as weakly acidic) + 3CO2.