1. (08-09) F3 Chemistry Individual Project Work Ionic & Covalent compounds Colisa Tou (37) F.3A

2. Magnesium Chloride Formula: MgCl2 Electron diagram:

3. Physical Properties of MgCl 2 Melting point & boiling point Its melting point is 714 °C (on rapid heating). Its boiling point is 1412 °C. physical state at room temperature crystalline solid colourwhite or colourless density2.32 g/cm³ (anhydrous) 1.56 g/cm³ (hexahydrate) solubility in water 54.3 g/100 ml (20 °C) electrical conductivity It does not conduct electricity in solid state/ their normal physical states but conduct electricity in aqueous state

4. Chemical properties of MgCl 2 laboratory preparation Magnesium chloride is regenerated from magnesium hydroxide using hydrochloric acid: Mg(OH) 2 (s) + 2 HCl MgCl 2 (aq) + 2 H 2 O(l) It can also be prepared from magnesium carbonate by a similar reaction. reactivity towards water / acid / alkali It reacts with acids, water/moisture.

5. Uses of MgCl2 - Use as an anti-icer

6. Other use of MgCl2 Culinary use Culinary use Use in dust and erosion control Use in dust and erosion control hydrogen storage hydrogen storage

7. Potential Hazard Flammability: Non-flammable Flammability: Non-flammable irritant irritant May emit toxic fumes of May emit toxic fumes of hydrogen chloride if involved hydrogen chloride if involved in a fire. in a fire.

8. special characteristics -slow heating leads to decomposition from 300 °C. -slow heating leads to decomposition from 300 °C. -magnesium chloride is deliquescent. Handle and store in a controlled environment and in an inert -magnesium chloride is deliquescent. Handle and store in a controlled environment and in an inert gas such as argon. gas such as argon.

9. Resources http://en.wikipedia.org/wiki/M agnesium_chloride http://en.wikipedia.org/wiki/M agnesium_chloride http://search.about.com/fullsea rch.htm?terms=chemistry (http://forums.about.com/n/pfx /forum.aspx?webtag=ab- chemistry&nav=messages&msg =8234) http://search.about.com/fullsea rch.htm?terms=chemistry (http://forums.about.com/n/pfx /forum.aspx?webtag=ab- chemistry&nav=messages&msg =8234) http:// www.espimetals.com/ msds's/Magnesium%20Chlori de.htm http:// www.espimetals.com/ msds's/Magnesium%20Chlori de.htm

10. The END~ Thank You