what is Alam? AND why it is used in hard water?give few pictures , plz be fast...
bhalaraneha:
do u mean alum
is it alum
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In producing potassium alum, for example, aluminum sulfate and potassium sulfate are dissolved in water, and then upon evaporation thealum crystallizes out of the solution. A more common production method is to treat bauxite ore with sulfuric acid and then with potassium sulfate
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