23. Why soap does not work well with hard water containing C*2andMg*2
ions because
a) It react with Ca*2 (or) Mg+2 to form a solution
b) It react with oily dirt to form a white precipitate
c) It reacts with Ca*2 (or) Mg+ to form a white precipitate
d) It reacts with Ca*2 (or) Mg+2 to form a colloidal solution
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Answer:
Ca2+and Mg2+ ions insoluble calcium and magnesium soaps respectinely when sodium or potassium soaps are dissolved in hard water.
7C17H15COONa+CaCl2→2NaCl+(C17H35COO)2Ca
Soap Insoluble calcium stearate (soap)
These insoluble soaps separate as scum in water and are useless as cleaning agents.
Explanation:
correct option is A