Question

the sum of water of crystallisation present in the salts ;blue vitriol,gypsum,common salt and plaster if paris is

Answer 1

Answer: -

7.5

Explanation: -

Loosely bound water molecules that form an essential part of some crystal compounds are called water of crystallization. They are written as xH₂O where x is the number of water of crystallization.

Blue vitriol is CuSO₄.5H₂O

Number of water of crystallization = 5

Gypsum is CaSO₄.2H₂O

Number of water of crystallization = 2

Common salt is NaCl

Number of water of crystallization = 0

Plaster of Paris is CaSO₄.1/2H₂O

Number of water of crystallization = 1/2

Sum of the water of crystallization = 5 + 2 + 0 + 1/2

                                                          = 7.5