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Is water hard when temporary hard water was boiled filtered and added with soap solution?
Wiki User
∙ 11y ago
- No
Boiling makes temporary hard water become soft water. Temporary hard water contains the compound calcium hydrogencarbonate. When temporary hard water is heated it breaks down to form insoluble calcium carbonate. This is the white scale, or fur you see on the inside of kettles. Using heat to break down a substance is called thermal decomposition.
All the calcium hydrogencarbonate has been removed from the water, so it is now soft water. A word equation for the thermal decomposition of temporary hard water is:
calcium hydrogencarbonate = calcium carbonate + carbon dioxide + water
Wiki User
∙ 11y ago
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