Synthetic detergents are more effective in hard water than soaps because

Options

A. They are highly soluble in water
B. Their `Ca^(++) and Mg^(++)` salts are water soluble
C. Their `Ca^(++)` and `Mg^(++)` salts are insoluble in water
D. None of these

Answer

B

Explanation

Hard water does not produce lather with soap because the cations `(Ca^(2+) and Mg^(2+))` present in hard water react with soap to form insoluble precipitates. Detergent form water soluble calcium and magnesium salt.