How is detergent use to differentiate between hard and soft water?
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Soap is less effective in hard water because it reacts to form the calcium or magnesium salt of the organic acid of the soap. ... Detergents, on the other hand, lather in both hard and soft water. Calcium and magnesium salts of the detergent's organic acids form, but these salts are soluble in water
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Detergent can be used to predict whether the water is soft or hard....
In hard water ca+2 and mg+2 ions are present . Detergents react with them and forms a complex or scum.
While in dkft water it makes foam at a huge amount......
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