Question

Aluminium chloride exists as a dimer, `Al_(2)Cl_(6)` in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives :
A. `Al_(2)O_(3)+6HCl`
B. `Al^(3)+3Cl^(-)`
C. `[Al(H_(2)O)_(6)]^(3+)`
D. `[Al(OH)_(6)]^(3-) + 3HCl`

Answer 1

Correct Answer - C
When dissolved in water, aluminium chloride changes into hydrated aluminium chloride which is ionic in nature.
`Al_(2)Cl_(6) + 12H_(2)O rarr 2AlCl_(3) . 6H_(2)O` or `[Al(H_(2)O)_(6)]^(3+) (Cl^(-))_(3)`