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Use this tag for questions relating to organic molecules and their properties (structure of organic molecules, spectroscopic properties, reaction mechanisms, stereochemistry etc). DO NOT use this tag as the only tag in your question, as this tag by itself cannot appropriately classify your question. Always use this tag in addition to other more specific tags.

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If we add surfactant in soft and hard water, which will require more surfactant and why? [closed]

I think it is hard water.But my doubt is even if we add more surfactant to hard water there will be no use because soap doesn't dissolve.then what is its use....
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