"A water sample contains following impurities: Mg(HCO3)2 = 292 mg/L, CaCl2 = 166.5 ppm, SiO2 = 5 ppm, Calculate the volume of EDTA solution (0.1 N) required to titrate 50 mL of the water sample before boiling and after boiling-filtering. (Ans: 1.5 mL)"
Solution.
Answer:
V(EDTA) = 1.75 ml
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