2. Salt Preparation Salt type (Na + , K + , NH 4 ) salt type Except (Na+, K+, NH4) Soluble salts Insoluble salts Acid +Alkaline Acid + Metallic oxide Acid + metallic carbonate Acid + Metal

4. (HCl + NaOH) NaCl Titration method Evaporation/Heating Cooling/crystallization Filtration Dry

5. Zn + 2HCl ZnCl 2 + H 2 Add metallic oxide/metal/carbonate oxide Heating Filtration Recrystallisation

6. Heating Filtration Evaporation Dry Filtration

7. Titration Burette HCl Retort stand 25 ml NaOH + phenolphthalein (2 drops) Erlenmeyer Flask

8. Evaporation/Heating Heat Triport Stand Heat the salt solution until saturated~1/3 from initial volume

9. Cooling/crystallization Salt Crystal Crystallization

10. Filtration Salt crystal Filter paper Filter funnel Filtered solution

11. Dry Filter paper Soluble salt crystal Dried by filter paper

12. Add metallic metal/metal/metallic carbonate powder until saturated Rode glass 30ml acid Metallic metal CuO/MgO/ZnO Metal Zn/Mg Metallic carbonate ZnCO 3 / MgCO 3 /CuCO 3

13. Heating Rode glass salt solution Heat

14. Evaporation Rode glass Salt solution Heat

15. Filtration Saturated salt crystal Rode glass Filter paper Remainder: metallic oxide/excess metal Salt solution

16. F iltratio n Rode glass Pure salt crystal salt solution

18. T h e E n d

19. Heating Impurities salt solution Heat

20. Filtration Rode glass Impurities salt solution Remainder Salt solution

21. Evaporation Heat Rode glass Salt solution

22. Filtration Rode glass Remainder Salt solution Impurities salt solution

23. F iltratio n Rode glass Pure salt crystal salt solution