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I Have Heard About Terms Like Hard Water: What Actually Is Hard And Soft Water And How Does The Process Of Dissolution Work


The actual question is. What are the technical/scientific details behind the process of water deionization? How does deionization machines like those manufactured by Millipore work? Most cost/energy efficient method to make deionized water is reverse osmosis. The mechanism is to apply external pressure to water and force it to go through a layer or layers of semipermeable membrane.

This is a very basic question about solubility, especially solution of table salt in water and solution of sugar in water. My questions are. Why do we call it a solution, I’d say in case table salt is dissolved in water.

One thing to note is that hard water isn’t the slightest bit dangerous.

Studies been conducted by the World Health Organization and the National Academy of Sciences, and no evidence was found linking hard water to and adverse health effects -or any effects in general! There are quite a few devices that claim to manage hard water scale using primarily magnetic or electrical technology. On top of this, manufacturers generally claim the devices utilize energy to alter the behavior of compounds or elements within the water. They do not claim water chemistry is altered. For instance, actually, the hardness of the water before and after treatment ain’t changed. This complicates assessment of their performance. Needless to say, at this time, no recognized agency in the has established protocol to assess the effectiveness of physical water treatment devices, while protocol was established to assess the effectiveness of ion exchange water softeners. You should take it into account. Questions remain as to their effectiveness.

More information on hard water can be found here and here. Why do we call it a solution, So in case table salt is dissolved in water.

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\ceCl-. Eventually, the positive and negative part of the ions are attracted by the oppositely charged water molecules. The ions are stable and do not undergo further reactions. For the second part of your question, external impurities can be removed by filtering if they are of considerable size. Of course dissolved impurities like phosphates, sulphates can not be removed by a cloth. The hard water has to be after that, ‘treated’ to make it soft again.


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