(i) What is Hydrated salt?
(ii) How is ethanoic acid prepared from ethanol? Give the chemical equation?

Explanation

(i) `*` When ionic substances are dissolved in water to make their saturated aqueous solution, their ions attract water molecules and attached chemically in certain ratio. This process is called hydration.
`*` The number of water molecules found in the crystalline substance is called water of crystallization.
`*` Such salts are called hydrated salts.
`*` Eg. Blue vitriol `-CuSO_(4).5H_(2)O`
(ii) Ethanoic acid is prepared by the oxidation of ethanol in the presence of alkaline potassium permanganate or acidified potassium dichromate.
`" "underset("Ethanol")(CH_(3)CH_(2)OH)underset(2[O])overset(KMnO_(4)|OH^(-))(rarr)underset(("Ethanoic acid"))(CH_(3)COOH+H_(2)O)`