II. Determination of Total Hardness of Water Source of water sample: Volume of water sample 22.00 mL Final volume reading (EDTA solution) Initial volume reading (EDTA solution) Volume consumed (EDTA solution) Molarity of standard EDTA solution used 34.60 mL 20.54 mL 14.06 mL 0.25 M Total hardness of water (ppm CaCO3)

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