The Chemistry Of Natural Waters Essay
November 6, 2014
The Chemistry of Natural Waters
Kareem Ali, Dima Alfawaz
Stephanie Le Clair
Introduction Water hardness is a way of defining the quality of water based upon the amount of Ca2+ and Mg2+ions that the sample contains.1 Water mostly becomes hard by flowing over weathering rocks which release these ions into the water. These released ions dissolve in water and then react with various elements, ions and compounds that come into contact with the water, which in some cases can become a nuisance.
When trying to wash your hands or dishes, calcium reacts with soap to form soap scum. This soap scum leaves hard water spots on dishes and leaves an uncomfortable film on your hands. The scum occurs when calcium ions reacts with the soap to form a precipitate. Another nuisance of hard water is laundry. The same precipitate that forms in washing the dishes forms while washing laundry.2 The precipitate dulls clothing and shortens the life of the clothing being washed. Hard water can also cause energy inefficiencies in homes. Hard water can react to form calcium carbonate, known as scale. Scale wears away at pipes and water heaters, which can cause insulation issues. This causes hot water heaters to over work and break down faster while also raising your energy bill.9 Water hardness while it has several disadvantages, it does have some benefits. Hard water clearly contains magnesium and calcium, which is very…