A 50.0 ml of impure CaCl₂.2H₂O solution sample was
treated with excess AgNO3 solution. The resulting ppt. AgCl
was filtered, washed and dried. It weighed 0.1873 g.
Calculate the % CaCl₂.2H₂O in solution then express the
conc. of chloride and calcium ions in terms of ppm.