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(Solved): You collect a sample of water from the lake at the Womens Park and analyze a 50 mL sample for Tot ...



You collect a sample of water from the lake at the Women’s Park and analyze a 50 mL sample for Total Hardness via the Method APHA 2430 using 0.00100 M EDTA as titrant and EBT as indicator. You find that it takes 7.50 mL of titrant to reach the end points. What is the hardness of the sample in Molarity and mg/L as CaCO3?



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Given concentration of EDTA = 0.001 M EDTA volume of water sample = 50 ml EDTA consumed =7.50 ml Hardness as CaCO3 in Molarity= ? Hardness as CaCO3 in
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