Reactions of Group 2 elements with water.

Identification of sulfate ions using BaCl2

Extraction of Ti a 1000 degrees C
TiO2 + C + 2Cl2
TiCl4 + 2Mg

Removal of SO2 from chimney

Neutralize soil using Calcium

In digestion tablets as an antiacid

Displacement reactions

Testing for Halide ions

Making bleach by disproportionation using cold sodium hydroxide

Disproportionation of Chlorine with water

Decomposition of water in sunlight

Purification of water using Cl2