Chemistry
Answer
- Furring of tea kettles is caused by sediment formed from boiling hard water. This fur is carbonates of calcium and magnesium.
- Hard water is unfit for washing purposes because it is difficult to form lather with soap. Scum may form in a reaction with soap, wasting the soap.
- Hard water is not suitable for producing steam. Solids in hard water incapable of changing into steam get deposited on the inner walls of the tubes. Hence, the tubes become narrower and eventually less steam is produced.
Related Questions
What are stalagmites and stalactites? How are they formed?
Give equations to show what happens when temporary hard water is
(a) boiled
(b) treated with slaked lime
Why does the hardness of water render it unfit for use in a
(i) boiler
(ii) for washing purposes?
Explain with equation, what is noticed when permanent hard water is treated with
(a) slaked lime
(b) washing soda