Advertisements
Advertisements
Question
Suggest one method for the removal along with the reaction for temporary hardness.
Advertisements
Solution
Temporary hardness—
By Boiling— This method helps to remove only the temporary hardness of water. When temporary hard water is boiled, the bicarbonates of calcium and magnesium break up to form their insoluble carbonates.
These can be filtered out so that water becomes soft
\[\ce{\underset{\text{(soluble calcium bicarbonate}}{Ca(HCO3)2}->[boild]\underset{\text{(ppt)(calcium carbonate)}}{CaCO3}+\underset{\text{(water)}}{{H2O}} + \underset{\text{(carbon dioxide)}}{CO2(g)}}\]
APPEARS IN
RELATED QUESTIONS
What is the effect on boiling point of water when impurity is added.
Name the compound responsible for temporary hardness.
Name the compound responsible for permanent hardness of water.
What do you understand by
Soft water
Give balanced equation to show how temporary hardness in water can be removed by boiling.
Using given sample of temporary and permanent hard water, soft water, ordinary soap, detergent and washing soda how would you distinguish between hard and soft water?
A sample of water is given in a trough. State how would you prove experimentally whether the given sample is hard water or soft water.
Two samples of water are placed in a beaker individually. State how you will determine experimentally which of the two samples contains permanent hard water.
Name the process by which temporary hardness is easily removed from the water.
What is the reason for the hardness of water?
