Question

Describe the molecular structure of Blue Vitriol with the help of picture.​

Answer 1

• Cupric sulfate is a salt formed by treating cupric oxide with sulfuric acid. It forms as large, bright blue crystals containing five molecules of water (CuSO4∙5H2O) and is known in commerce as blue vitriol.

Thank you.

Answer 2

Answer:

Blue Vitriol is Penta hydrated copper sulphate. On heating at 100  

o

C it loses 4 molecules of crystallization. At 230  

o

C, it loses 5  

th

 molecules of water and becomes white amorphous powder. The powder again becomes blue in presence of water. It undergo dissociation on strong heating.

CuSO  

4

​

5H  

2

​

O  

100  

o

C

​

CuSO  

4

​

.H  

2

​

O+4H  

2

​

O

Pentahydrated                  Monohydrated  

copper sulphate               copper sulphate

CuSO  

4

​

.H  

2

​

O  

230  

o

C

​

CuSO  

4

​

+H  

2

​

O

                               Anhydrous copper

                                       sulphate

CuSO  

4

​

 

730  

o

C

​

CuO+SO  

3

​

Explanation: