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Question
State the disadvantages of using hard water.
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Solution
- It is more difficult to form lather with soap.
- Scum may form in a reaction with soap, wasting the soap.
- Carbonates of calcium and magnesium form inside kettles. This wastes energy whenever you boil a kettle.
- Hot water pipes 'fur up'. Carbonates of calcium and magnesium start to coat the inside of pipes which can eventually get blocked.
RELATED QUESTIONS
Suggest one method for the removal along with the reaction for temporary hardness.
Boiling removes the ................ hardness of water.
What do you understand by
Hard water
Differentiate between Hard & soft water with suitable examples.
Give balanced equation to show how temporary hardness in water can be removed by boiling.
Give reason for the following:
Hardness in temporary water can be removed by boiling, but hardness in permanent hard water cannot.
Give reason for the following:
Washing soda can be used to remove both temporary and permanent hardness in water.
Explain the meaning of the terms – hard water & 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.
Temporary hardness of water can be removed by ________ of water.
