139.
When hard water is boiled in electric kettle, a white scale gets formed inside the kettle. How is this scale formed? What is its harm?
When hard water is boiled in an electric kettle, a white scale is formed inside the kettle. It is due to the formation of calcium and magnesium carbonates.
The name of the clear solution is lime water.
As the scale formed is a poor conductor of heat, a lot of heat gets wasted.
When CO2 is passed through the clear solution, it becomes milky due to the formation of insoluble calcium carbonate but the milkiness soon disappears since soluble calcium carbonate gets formed.
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