When water that contains temporary hardness is boiled in a kettle, scale is formed on the heating element - Leaving Cert Chemistry - Question g - 2009
Question g
When water that contains temporary hardness is boiled in a kettle, scale is formed on the heating element. Identify the chemical that is the main component of this s... show full transcript
Worked Solution & Example Answer:When water that contains temporary hardness is boiled in a kettle, scale is formed on the heating element - Leaving Cert Chemistry - Question g - 2009
Step 1
Identify the chemical component
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Answer
The main component of the scale formed when water with temporary hardness is boiled is calcium carbonate, which has the chemical formula CaCO₃. This compound precipitates out of the water when it is heated.
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