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

Question

Heating an aqueous solution of aluminium chloride to dryness will give : (A) Al(OH)Cl2 (B) Al2O3 (C) Al2Cl6 (D) AlCl3

Tardigrade Admin · Accepted Answer

Aqueous solution of AlCl3 is acidic due to hydrolysis. AlCl3 + 3H2O leftharpoons Al(OH)3 + 3HCl On strongly heating Al(OH)3 is converted into Al2O3 2Al(OH)3 xrightarrowΔ AI2O3 + 3H2O

Q. Heating an aqueous solution of aluminium chloride to dryness will give :

$A l (O H) C l_{2}$

$A l_{2} O_{3}$

$A l_{2} C l_{6}$

$A lC l_{3}$

Aqueous solution of $A lC l_{3}$ is acidic due to hydrolysis.
$A lC l_{3} + 3 H_{2} O ⇌ A l (O H)_{3} + 3 H Cl$
On strongly heating $A l (O H)_{3}$ is converted into $A l_{2} O_{3}$
$2 A l (O H)_{3} Δ A I_{2} O_{3} + 3 H_{2} O$

Q. Heating an aqueous solution of aluminium chloride to dryness will give :

Al(OH)Cl2​

Al2​O3​

Al2​Cl6​

AlCl3​

Aqueous solution of AlCl3​ is acidic due to hydrolysis. AlCl3​+3H2​O⇌Al(OH)3​+3HCl On strongly heating Al(OH)3​ is converted into Al2​O3​ 2Al(OH)3​Δ​AI2​O3​+3H2​O

$A l (O H) C l_{2}$

$A l_{2} O_{3}$

$A l_{2} C l_{6}$

$A lC l_{3}$

Aqueous solution of $A lC l_{3}$ is acidic due to hydrolysis.
$A lC l_{3} + 3 H_{2} O ⇌ A l (O H)_{3} + 3 H Cl$
On strongly heating $A l (O H)_{3}$ is converted into $A l_{2} O_{3}$
$2 A l (O H)_{3} Δ A I_{2} O_{3} + 3 H_{2} O$