File Name: difference between hard water and soft water in chemistry .zip
Hard water contains a significant quantity of dissolved minerals, such as calcium and magnesium. In general, hard water is not harmful for health. In fact, it may confer some benefits because it is rich in minerals and reduces the solubility of potentially toxic metal ions such as lead and copper. However, there are some industrial applications where hard water may lead to inefficiencies or damage to containers and pipes. In such instances, water softening methods are used.
School Chemistry Notes: Explaining hard and soft water. The difference between hard water and soft water is explained and the causes and treatment of hard water fully explained. Extra Aqueous Chemistry Index:. Water cycle, potable water, water treatment, pollution, tests for ions. Colloids — sols, foam and emulsions.
At APEC, we strive to provide the best drinking water available to everyone. Even if it means offering a free system to those in need. Hard water As rainwater falls, it is naturally soft. However, as water makes its way through the ground and into our waterways, it picks up minerals like chalk, lime and mostly calcium and magnesium and becomes hard water. Since hard water contains essential minerals, it is sometimes the preferred drinking water.
Water may be sometimes be described as being hard water and soft water. The distinction rests on the amount of dissolved minerals within the water. Hard water contains a high amount of minerals, and soft water contains little to none. Water accumulates dissolved solids as it moves through rocks and other substrates, like limestone, gypsum or dolomite. Calcium and magnesium are particularly soluble in water, and if these naturally occurring minerals are within the geographical area, the residents surrounding the water source will have hard water. In the United States, areas of the East Coast generally have soft water, and those in the southwest have hard water.
Hard water is water that has high mineral content in contrast with " soft water ". Hard water is formed when water percolates through deposits of limestone , chalk or gypsum  which are largely made up of calcium and magnesium carbonates , bicarbonates and sulfates. Iron oxides or iron carbonates can give a reddish brown colouration to hard water deposits. Hard drinking water may have moderate health benefits. It can pose critical problems in industrial settings, where water hardness is monitored to avoid costly breakdowns in boilers , cooling towers , and other equipment that handles water. In domestic settings, hard water is often indicated by a lack of foam formation when soap is agitated in water, and by the formation of limescale in kettles and water heaters. Natural rainwater, snow and other forms of precipitation typically have low concentrations of multivalent cations such as Calcium and Magnesium.
Orders made before 12 noon will be delivered the next day. We do not deliver on Sundays or Public Holidays. Our retail store is open Mon — Sat 11am — 5pm. The result is water with sodium ions instead of calcium ions. You will not know if the water is soft or hard by just looking at it.
Perhaps you have on occassion noticed mineral deposits on your cooking dishes, or rings of insoluble soap scum in your bathtub. These are not signs of poor housekeeping, but are rather signs of hard water from the municipal water supply. These ions do not pose any health threat, but they can engage in reactions that leave insoluble mineral deposits. These deposits can make hard water unsuitable for many uses, and so a variety of means have been developed to "soften" hard water; i. Mineral deposits are formed by ionic reactions resulting in the formation of an insoluble precipitate.
The main difference between hard and soft water is the mineral content. Minerals commonly found in hard water are chalk, lime, calcium, and magnesium. Rain water is naturally soft but picks up these minerals as it runs through the ground.
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