Q3 of 270 Page 96

State whether the following statement is true or false:
Copper sulphate crystals are always wet due to the presence of water of crystallization in them.

The given statement is false. Copper sulphate is not wet. It is an hydrated salt as it contains water molecules which imparts blue colour to it.

What is the chemical formula of

(a) baking soda, and

(b) washing soda?

Write the chemical formula of (i) soda ash, and

(ii) sodium carbonate decahydrate.

Which of the following salt has a blue colour and why?

CuSO₄.5H₂O or CuSO₄

What would be the colour of litmus in a solution of sodium carbonate?

State whether the following statement is true or false:Copper sulphate crystals are always wet due to the presence of water of crystallization in them.