Question

soap cannot be used in hard water​

Answer 1

Answer:

because hard water means ocean water which is salty as soap produces scum so anything could not be clean properly

Answer 2

Answer:

1. Soap cannot be used in hard water because of the water's salt content .
2. Instead of forming lather , it forms a clump of soap .
3. In some cases , it forms a layer of oil in the water .
4. Also , the soap loses its properties of forming lather .
5. Therefore , soap cannot be used in hard water .