Question

what is water crystallization give short definition and write an activity also ?​

Answer 1

The water molecules associated with a crystalline substance is called ‘water of crystallisation’. To show crystalline salts contain water of crystallisation.

Draw the attached figure.

Materials Required: CuSO4.5H2O (Blue vitriol), boiling tube, burner, cork, delivery tube, test tube, clamp stand.

Procedure:

1. Take 2g of CuSO4.5H2O in a boiling tube fitted in a clamp stand.

2. Observe its colour. Fit it with cork and delivery tube bent at two right angles which dips into a test tube

3. Heat crystals in boiling tube.

4. Observe vapours being condensed in test tube.

5. Cool the crystals and add few drops of water into it.

Observation: Water vapours get condensed in a test tube and colour of blue crystals changes into white. On adding water to anhydrous copper sulphate, it changes into blue again.

Chemical Reaction :

heat

CuSo4.5H2O ------> CuSo4+5H2O

Blue vitrol White

(ahydrous form

of Copper

sulphate)

Conclusion : Crystalline substances have water of crystallisation which are lost on heating.

Answer 2

Answer:

water of crystallization is the number of water molecus that combine chemically in definite molecular proportion with the concerned salt in the crystalline state . this water is responsible for the geometric shape and colour of the crystal .

soory i have no activity on it

but

i hope it helps u