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The chemical equation for Calcium Hydroxide is Ca(OH)2. Calcium hydroxide is an inorganic compound that is also known as slaked lime.
- It is a colourless crystal or a white powder that is obtained when calcium oxide is mixed with water.
- Calcium hydroxide is formed by the combination of a Calcium cation (Ca2+) and two OH− anions, hence its chemical formula is Ca(OH)2.
- Calcium is in group 2 of the periodic table – hence it has 2 valence electrons it must lose in order to be stable.
- Oxygen is in group 6 – hence, it needs to gain 2 electrons to be stable.
- Oxygen gets one electron from a hydrogen atom and forms a hydroxide (OH−) anion.
- Now the atom needs just one more electron, while calcium offers two.
- Therefore, two OH− groups combine together to form calcium hydroxide and each hydroxide group gets one electron from calcium giving the chemical formula Ca(OH)2.
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