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Q. Which of the following statements about anhydrous aluminium chloride is correct?

The p-Block Elements

Solution:

$AlCl_3$ exists as a dimer $(Al_2Cl_6)$. It is a strong Lewis acid as it has an incomplete octet and has a tendency to gain electrons. $AlCl_3$ undergoes hydrolysis easily and forms an acidic solution. $AlCl_3 + 3H_2O \rightarrow Al(OH)_3 + 3HCl$