Hardness of water may be removed by either boiling or addition of chemicals

Hardness of water may be removed by either boiling or addition of chemicals.
a) Write an equation to show how boiling removes hardness of water.
b) Name two chemicals that are used to remove hardness of water.

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a) Ca(HCO₃)₂(aq) $\rightarrow$ CaCO₃(s) + H₂O(l) + CO₂(g)

b) -Sodium carbonate
- Calcium hydroxide

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johnmulu answered the question on February 13, 2017 at 13:53

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