Give two examples of hydrated substances.

Short Answer

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Removal of Hardness of Water

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Chapter 8: Water - Exercise II [Page 115]

Chapter 8 Water
Exercise II | Q 6.1 | Page 115

Name the compound responsible for permanent hardness of water.

Temporary hardness of water can be removed by

What do you understand by

Soft water

What do you understand by

Hard water

Differentiate between Temporary & permanent hard water with suitable examples.

Give balanced equation to show how temporary hardness enters into water.

Give balanced equations to show how permanent hardness in water can be removed by addition of washing soda.

State the causes of hardness in water.

Give two natural sources of hard water.

Name the process by which temporary hardness is easily removed from the water.