Question

Anhydrous aluminium chloride $\left(\right.Al_{2}Cl_{6}\left.\right)$ is covalent compound and soluble in water giving

• A. $Al ^{3+}$ and $Cl ^{-}$ ions
• B. $\left[ Al \left( H _{2} O \right)_{6}\right]^{3+}$ and $Cl ^{-}$ ions
• C. $\left[ AlCl _{2}\left( H _{2} O \right)_{4}\right]^{+}$ and $\left[ AlCl _{4}\left( H _{2} O \right)_{2}\right]^{-}$ ions
• D. none of the above

Answer 1

Answer: (C)

Anhydrous aluminium chloride $\left( Al _{2} Cl _{6}\right)$ is covalent compound and soluble in water giving $\left[ AlCl _{2}\left( H _{2} O \right)_{4}\right]^{+}$ and $\left[ AlCl _{4}\left( H _{2} O \right)_{2}\right]^{-}$ ions

$AlCl _{3} \cdot 6 H _{2} O \stackrel{\text { dissociation }}{\longrightarrow }\left[ AlCl _{2}\left( H _{2} O \right)_{4}\right]^{+}+\left[ AlCl _{4}\left( H _{2} O \right)_{2}\right]^{-}$