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Cold water of the same source forms lather hardly with soap. Why? ​
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37 votes
37 votes
Cold water of the same source forms lather hardly with soap. Why?
​

User Fundon
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2 Answers

11 votes
11 votes
hardness of water is due to calcium and magnesium ions. when soap is added to hard water, calcium and magnesium ions replaces sodium (or potassium) ions in the salt (soap) and gets precipitated hence lather formation is hindered.
User Aesede
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15 votes
15 votes

Answer:

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Step-by-step explanation:

User StationaryTraveller
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