Hydrated salts

copper suphate and ferrors sulphate

PPT explanation
https://youtu.be/ZGML9OMv5Yg

1. Hydrated Salts WATER OF CRYSTALLIZATION Lavanya Bharathi Kannegolla M .A., M.Sc.,B.Ed.,

2. What is hydrated salt……….?

3. Hydrated salt-------? THE IONIC COMPOUNDS WHICH HOLD A FIXED NUMBER OF WATER MOLECULES WITH THEM ARE CALLED HYDRATED SALTS

4. HERE U GOO……

5. EXAMPLES: BLUE VITRIOL COPPER SULPHATE PENTA HYDRATE CuSO 4 .5 H 2 O GREEN VITRIOL FERROUS SULPHATE HEPTA HYDRATE FeSO 4 . 7 H 2 O

6. HOW COME WATER IN SALT………? A FIXED NUMBER OF WATER MOLECULES ARE HOLD BY EACH MOLE OF HYDRATED SALTS …..CALLED WATER OF CRYSTALLISATION.

7. COPPER SULPHATE IS BLUE IN COLOUR…

8. ACTIVITY/OBSERVATION /INFERENCE TAKE A LITTLE AMOUNT OF COPPER SULPHATE PENTAHYDRATE IN A DRY TEST TUBE AND HEAT IT INA BLUE FLAME OF BUNSEN BURNER. WATER DROPLETS FROM SALT COME OUT AND ADHERE TO THE INNER WALLS OF TEST TUBE COPPER SULPHATE LOSES ITS BLUE COLOUR DUE TO LOSS OF WATER.

9. COPPER SULPHATE IS BLUE IN COLOUR DUE TO FIVE WATER MOLECULES IN EACH MOLE……

10. HEY ….HERE IS THE WATER COMING OUT ……………!!!!

11. EFFLORSCENCE THE LOSS OF WATER OF CRSTALLIZATION FROM A HYDRATED SALT BEFORE HEATING AFTER HEATING CuSO 4 .5H 2 O  CuSO 4 + 5 H 2 O BLUE WHITE Hydrated salt Anhydrous salt

12. OBSERVATION & INFERENCE COPPER SULPHATE IS A HYDRATED SALT WHICH HOLDS FIVE WATER MOLECULES WITH IT ,CALLED AS COPPER SULPHATE PENTA HYDRATE. ON HEATING IT LOOSES ITS FIVE MOLECULES OF WATER AND HENCE BECOME ANHYDROUS WHITE SALT. WHEN WATER IS ADDED THE SALT REGAINS THE BLUE COLOUR. SO BLUE COLOUR OF COPPER SULPHATE IS DUE TO WATER MOLECULES.

13. THANK YOU CHILDREN……