2ANSWER THE FOLLOWING QUESTIONSA. THE TOTAL HARDNESS OF THE WATER...

5.2

Answer the following questions

a. The total hardness of the water in mg/l as CaCO

3

is

b. The alkalinity of the water in mg/l as CaCO

3

is

Lime and soda-ash treatment is selected to reduce hardness to practical limits. Answer the

following questions:

c. The amount of lime (mg/l) needed is

d. The amount of soda ash (mg/l) needed is

e. The concentration of Na (mg/l) in the treated water is