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 }}{\rightarrow}\left[ AlCl _2\left( H _2 O \right)\right]^{+}+\left[ AlCl _4\left( H _2 O _2\right]^{-}\right.$$\left[ AlCl _2\left( H _2 O \right)_4\right]^{+}+\left[ AlCl _4\left( H _2 O \right)_2\right]^{-}$