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Water Hardness
Essay specific features
Written by:
Anthony B
Date added:
October 7, 2013
Level:
University
Grade:
A
No of pages / words:
2 / 336
Was viewed:
661 times
Rating of current essay:
Essay content:
Distillation has two disadvantages: 1) A large energy input is
required and 2) If simple distillation is used, chemical contaminants
with boiling points below water (such as ethlyene gycol in automotive
antifreeze) will be condensed along with the water. Distillation is
most commonly used to remove dissolved minerals and salts from water...
displayed 300 characters
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Distillation is
most commonly used to remove dissolved minerals and salts from water.
Water hardness can be readily determined by titration with the chelating agent EDTA (ethylenediaminetetraacetic acid). This reagent is a weak acid that can lose four protons on complete neutralization. The four acid sites and the two nitrogen atoms all contain unshared electron pairs, so that a single EDTA ion can form a complex with up to six sites on a given cation...
displayed 300 characters
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