Which of the following salt has a blue colour and why?
CuSO₄.5H₂O or CuSO₄

Open in App

Solution

CuSO₄.H₂O has a blue colour.

The blue colour is due to the presence of water molecules in the structure. The colour of a salt crystal is usually given by the water of crystallisation. But anhydrous salts (without the water molecules) lose their colour and shape and become white. Thus, CuSO₄, which does not have water molecules, appears white.

Suggest Corrections

Similar questions

C u S O_{4} .5 H_{2} O

C u S O_{4} .

$C u S O_{4} .5 H_{2} O$ is blue in colour while $C u S O_{4}$ is colourless. Why?

C u {S O}_{4} \cdot 5 H_{2} O

C u {S O}_{4}

C u S O_{4} \cdot 5 H_{2} O

C u S O_{4}

Which of the following are the products formed on heating $C u S O_{4} . 5 H_{2} O (s)$ ?

Join BYJU'S Learning Program