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Answer to Question #150300 in Organic Chemistry for Ray Beale
Question #150300
A 40.0 mL aliquot of a city drinking water was treated with a small amount of an NH3-NH4Cl
buffer to bring the pH to 10. After the addition of Calmagite indicator, the solution required
10.46 mL of 5.140 x 10^-3 M EDTA. Calculate the water hardness in terms of ppm CaCO3.
buffer to bring the pH to 10. After the addition of Calmagite indicator, the solution required
10.46 mL of 5.140 x 10^-3 M EDTA. Calculate the water hardness in terms of ppm CaCO3.
Expert's answer
134.411 ppm CaCO3
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