Question

What is reaction of soap with water ??​

Answer 1

HERE'S YOUR ANSWER

Soaps are sodium or potassium salts of long chain fatty acids. When soap is added to hardwater, the Ca2+ and Mg2+ ions present in hardwater react with soap. ... The cleaning action of soap is very effective in soft water because it contains negligible calcium and magnesium ions.

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Answer 2

Na2CO3 + 10H2O ---->Na2CO3.10H2O. =sodium carbonate decahydrate