Which solution soap give good lather potassium chloride or sodium chloride?
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Soaps are sodium salts of fatty acids. Addition of sodium chloride reduces the solubility of the soap salts. The soaps precipitate due to a combination of common ion effect and increased ionic strength. ... In the presence of excess sodium ions the solubility of soap salts is reduced, making the soap less effective. That is why Potassium Chloride is best for soap.
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