Question

Blue vitriol is the common name for hydrated copper sulphate.
A. True
B. False

Answer 1

Hint: Copper sulphate is a blue coloured compound which is crystalline in nature. Vitriol is commonly used to refer to molecules which have a sulphate group present in them.

Complete step by step answer:
The formula for hydrated Copper sulphate is
$CuS{O_4}.5{H_2}O$
It is a pentahydrate salt
It is formed by this reaction:
When copper sulphate crystals come in contact with water, it forms a pentahydrate salt.
$CuS{O_4} + {H_2}O \to CuS{O_4}.5{H_2}O$
Now, in the question Blue vitriol is the name suggested for hydrated copper sulphate.
Breaking the word in two parts we get, Blue and vitriol.
Blue refers to the colour of the hydrated copper sulphate crystals
Vitriol is a general name which is used for anionic derivatives of sulphuric acid.
It is Basically used for sulphate salts.
Hence, Blue Vitriol refers to a blue sulphate salt.
Hydrated copper sulphate is a blue sulphate salt.

So, the statement is true..

Note: The five molecules of water which are attached to the molecule are called as water of crystallisation.
These molecules are only referred to as this because these water molecules are not chemically attached to the molecule . These molecules are attached by physical forces, such as van der waal forces of attraction or hydrogen bonding. These molecules will be disassociated when the hydrated salt is dissolved in water. Then the molecule breaks into its respective ions. But the water molecule will dissociate to give molecule ions and water molecules. It does not start any chemical change in the molecule.