Problem $2.(3$ points$)$ The following mineral analysis was reported for a water sample taken from Well

No$.1$ at the Eastwood Manor Subdivision near McHenry Illinois in $1976.$ Determine the

total, carbonate, and noncarbonate hardness in units of $m\frac{g}{L}$ as $CaC{O}_3.$ Note that because

all the constituents were not analyzed, the ion balance will not work out. All values are

given as $m\frac{g}{L}$ as the ion unless otherwise stated.

Problem $3.(3$ points$)$ A water is analyzed and found to have the composition shown in the following

table. All values are given in terms of the ion $($not as $CaC{O}_3).$ The equivalent weight table in

the notes may help in answering this question.

What concentrations $($expressed as $m\frac{g}{L}$ of slaked lime $(Ca(OH{)}_2)$ and soda ash $(N{a}_{2}C{O}_3)$

must be added to remove the maximum practical hardness? $($Assume a lime excess of $1\mathrm{.}25$

$me\frac{q}{L}.$