25cm3 of sample water produced lather on the addition of 33.0cm3 of a standard soap solution. Another 25.0cm3 of the same sample of water that has been boiled required 15.0cm3 of the soap solution. If 25cm3 of distilled water required 3.0cm3 of the soap solution to produce lather, Calculate the ratio of temporary hardness to permanent hardness.?
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Asked by CYPRIAN on 21st January, 2021
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