Distinguish between : a. Hard water and soft water b. Temporary hardness and permanent hardness
What do you understand by Hard and Soft water? How is hardness of water removed by washing?
a. What does [H_(9)O_(4)]^(o+) stand for ? Draw its structures. b. Can sodium bicarbonate make water hard? c. Hard water is softened before using in boilers. Why? d. What is sequestration? How is hard water made soft by sequestration?
