Group 2 oxides are basic oxides and can react with water to form alkalis which are colourless solutions.
The general equation for the reaction is:MO (s) + H2O (l) → M (OH)2 (aq)
For example calcium oxide reacts with water and release hydroxide ions to form an alkaline solution.CaO(s) + H2O(l) → Ca(OH)2(aq)Group 2 hydroxides are only slightly soluble in water so form a solid precipitate when the solution becomes saturated.
The general equation for the reaction is:MO (s) + H2O (l) → M (OH)2 (aq)
For example calcium oxide reacts with water and release hydroxide ions to form an alkaline solution.CaO(s) + H2O(l) → Ca(OH)2(aq)Group 2 hydroxides are only slightly soluble in water so form a solid precipitate when the solution becomes saturated.