Question

Soap is not suitable to wash clothes with hard water justify this statement giving three reasons

Answer 1

because soap in hard water dissociates mg and ca ions that results in the formation of scum

n scum does not carries the oil n dirt marks away!!!

Answer 2

soap is made up of sodium and potassium ion with long chain of hydrocarbons and hard water is nothing but water containing calcium and magnesium ions.

so when you use soap in hard water , white scum forms because of which soap can't wash cloths properly