HYDROXIDES BECOME MORE SOLUBLE AS YOU GO DOWN GROUP 2
Magnesium Hydroxide = insoluble in water
Calcium hydroxide = used as limewater, 1l of pure water will dissolve 1g of Ca(OH)2
Barium hydroxide = soluble enough to produce a solution of 0.1moldm-3 at room temp
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Magnesium hydroxide (milk of magnesia) is used to neutralise excess stomach acid
Calcium hydroxide is a stonger base than magnesium hydroxide and is used in agriculture to adjust the pH of acid soils and lakes
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