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Determination of Water Hardness using Complexometric …
calcium, magnesium, and heavy metal ions, which replace sodium and potassium ions in soaps and detergents to form precipitates. These precipitates interfere with cleaning action and leave bathtub rings and scum. Calcium carbonate (CaCO3) is the most common precipitate. It is water insoluble and is the main component of the scale that clogs pipes.
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Answers to Selected Exercises - McCord CH302
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