it can even occur with soft water the scum on the soap believe it or not is actually the scum from the cracks and crevises of your you body so shower more and no scum!
Liquid soap is a great alternative to bar soap, which can be messy - you'll always get residue in baths and showers - and less convenient to use than a liquid. Liquids are also less drying to the skin than bar soap, and there's no waste.
There are lots of liquid body and hand cleansers in pump-packs on the market, as well as refills, from plain, unscented Sorbolene-based liquids (good for allergy sufferers, generally cheaper, and very pleasant to use) to more expensive big-brand products.
Supermarkets and beauty shops sell little polyester netting-type shower 'sponges' you just pump a little liquid cleanser onto; they make the skin feel great, and just rinse clean.
The hard water contains insoluble carbonates and bicarbonates.
so hard water is when treated with water it gives insoluble carbonates (MgCO3,CaCO3) and bicarbonates (Mg(HCO3)2) and (Ca(HCO3)2) which form a scum like insoluble material.
Due to the presence of calcium ions and magnesium ions in hard water.
When soap is used with hard water, a scum is formed and it;Might damage the fabric.Makes the need of more soap for cleaning.One of the reactions involved in forming the scum is;2 C17H35CO2-Na+(aq) + Ca2+(aq) --> Ca(C17H35CO2)2(s) + 2 Na2+(aq)
The electronic charge that each of the two functional groups posses are opposite and thus attracted to each other. This causes a neutral charge to occure and the lipophilic portion of the soap molecule takes over. Soap scum is basically a smear of fat with metal ions crusting it.
Dissolved minerals in the water. In most cases it is better to water your garden with hard water instead of treated water. The plants typically like the minerals found in hard water.
When soap is used with hard water, a scum is formed and it;Might damage the fabric.Makes the need of more soap for cleaning.One of the reactions involved in forming the scum is;2 C17H35CO2-Na+(aq) + Ca2+(aq) --> Ca(C17H35CO2)2(s) + 2 Na2+(aq)
Hard water does not produce lather. So soap does not work effectively with hard water as soap does not form a good lather with hard water.
The soap may not work as efficiently as it works in soft water since scum formation may take place.
dg
Scum - calcium and other metal salts of fatty acids
Most soaps contain sodium and potassium salts of fatty acids. These are water soluble compounds that help carry away oils and other water insoluble substances. Soap scum forms when these salts react with calcium and magnesium compound in the water. The newly formed calcium and magnesium salts are insoluble in water,and so forma coating on surfaces. This is more likely to happen if you have hard water, water rich in calcium and magnesium.
The calcium (as calcium carbonate) in hard water replaces the sodium on the fatty acids of the soap causing them to precipitate as a sticky scum. This deposits soap scum on the things being washed and causes the formation of "bathtub ring" on bathtubs, sinks, etc.
Soapless - they dont form an insoluble scum with hard water dude
Hard water has natural ions dissolved in it. It keeps shampoo for forming suds, it forms soap scum, and it leaves calcium and other deposits in your plumbing. Soft water doesn't have these ions.