Question

unlike soaps, detergents work well with hard water , despite the presence of dissolved salts in it.explain​

Answer 1

Soaps are sodium or potassium salts of long chain fatty acids. ... The cleaning action of soap is very effective in soft water because it contains negligible calcium and magnesium ions. Synthetic detergents are used in the case of hard water also because the calcium and magnesium salts of detergents are soluble in water.

Answer 2

It is because detergents don't form scum or micelle particles unlike soaps.