Home
Class 11
CHEMISTRY
Why hard water does not form lather with...

Why hard water does not form lather with soap ? What advantage has soap over detergents ?

Text Solution

Verified by Experts

It is because `Ca^(2+)andMg^(2+)` ions present in hard water react with soap to form `Ca^(2+)andMg^(2+)` salts of fatty acids which are insoluble in water.
Advantages of soap over detergent, soap are biodegradable where as detergents are non-biodegradable.
Promotional Banner

Topper's Solved these Questions

  • HYDROGEN

    SUBHASH PUBLICATION|Exercise Two marks questions and answers|33 Videos

  • HYDROCARBONS

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTIONS AND ANSWERS|25 Videos

  • P-BLOCK ELEMENTS

    SUBHASH PUBLICATION|Exercise Three mark questions and answers|24 Videos

Similar Questions

Explore conceptually related problems

(a) Complete the following equations : (i) nCH_(2) = CH_(2) rightarrow……….. (ii) CH_(3)COOH - NaHCO_(3)rightarrow …….+……+……. (b) What is the cause of hardness of water? Why soap does not form lather with hard water? Mention the disadvantage of cleaning clothes with soap in hard water?

Boron does not form B^(3+) ion. Why?

Why soaps do not work in hard water ?

Explain why it is difficult to wash clothes with soap when water is hard. How do detergents help in overcoming this problem?

What is Neo-Darwinism? What are its advantages over Darwinism?

What are soaps?

I] Locate and name the water reservoirs in figures a and b. II] Which has an advantage over the other and why?