Do you expect different products in solution when aluminium (III) chloride and potassium chloride treated separately with (a) normal water, (b) acidified water and (c) alkaline water? Write equations wherever necessary.

Explanation

Both the compounds are salts and they react in different manner with water of different nature.
(a) Aluminium (III) chloride of `AlCl_(3)` will react with water as follows:
`AlCl_(3)+3H_(2)O to Al(OH)_(3)+H_(2)(g)`
The reaction is known as hydrolysis.
(*)In normal water, Both `(Al(OH)_(3))` and HCl will be present
(*) In alkaline water, HCl will be neutralised by the alkali added. Therefore it will contain mainly `Al(OH)_(3)` and will be alkaline in nature.
(*) In acidic water. In this medium, `Al(OH)_(3)` will be neutralised by the acid added. Therefore, water will contain mainly HCl and will be acidic in nature.
(b) Potassium chloride is a salt of strong acid and strong base. It will remain as such under all the conditions and will not undergo and chemical reaction.