Home
Class 10
CHEMISTRY
Explain the formation of scum when hard ...

Explain the formation of scum when hard water is treated with soap.

Text Solution

Verified by Experts

Hard water contains hydrogencarbo-nates, chlorides and sulphates, of calcium and magnesium which react with soap to form scum. For example, calcium chloride reacts with soap to form scum.
Sodium stearate + Calcium chloride + Calcium stearate (soap) `rarr` Sodium chloride (scum)
Formation of scum hinders the formation of foam. Soap is thus unable to clean in hard water.
Promotional Banner

Topper's Solved these Questions

  • CARBON AND ITS COMPOUNDS

    SWAN PUBLICATION|Exercise ADDITIONAL IMPORTANT QUESTIONS(MULTIPLE CHOICE QUESTIONS)|16 Videos

  • CARBON AND ITS COMPOUNDS

    SWAN PUBLICATION|Exercise ADDITIONAL IMPORTANT QUESTIONS(VERY SHORT ANSWER TYPE QUESTIONS)|22 Videos

  • CARBON AND ITS COMPOUNDS

    SWAN PUBLICATION|Exercise TEXTBOOK QUESTIONS|13 Videos

  • ACIDS, BASES AND SALTS

    SWAN PUBLICATION|Exercise ADDITIONAL IMPORTANT QUESTIONS (Long Answer Type Questions)|6 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    SWAN PUBLICATION|Exercise ADDITIONAL IMPORTANT QUESTIONS(LONG ANSWER TYPE QUESTIONS)|10 Videos

Similar Questions

Explore conceptually related problems

Explain the formation of mirage.

Explain the formation of a chemical bond.

Explain formation of rainbow.

Why does hard water not form lather with soap ?

Explain the formation of placenta after implantation in a human female.