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
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