Hazards
Magnesium burns extremely bright. Do not look directly at the flame.
Chemicals and Solutions
Magnesium
Materials
- Bunsen burner
- Matches
- Crystallization dish for magnesium
- Tweezers
Procedure
- Hold the magnesium using tweezers, and light it in a bunsen burner.
- Add burnt Mg ribbon to crystallizing dish containing water and phenolphthalein. Indicator turns pink.
Discussion
\( \ce{ 2Mg_{(s)} + O2_{(g)} -> 2MgO_{(s)} \Delta G^{{o}}_{Rxn} = -1139KJ/Mol } \)
\( \ce{ MgO + H2O -> Mg(OH)2 \Delta G^{{o}}_{Rxn} = -27KJ/Mol } \)