Why soaps cannot be used in hard water explain it with the help of reaction ??
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Soaps cannot be used in hard water because they forms precipitates. ... These prevent the calcium and magnesium ions from reacting with the soap and allow it to form lather, thus forming precipitates.
When Epsom salt (magnesium sulfate) dissolves, it separates into its ions: a magnesium ion (Mg2+) and a sulfate ion (SO4 2-), which results in hard water. When hard water and soap are mixed, the magnesium ion reacts with soap molecules and forms a solid material called a precipitate, which does
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