Web2 Aug 2014 · The presence of Calcium, Magnesium salt i.e. bicarbonates, sulphates, chloride in water is called causes of hardness of water. The water which contains these salts is called hard water. Hard water does not easily form lather with soap as the salt of Calcium and Magnesium react with soap to form insoluble organic salts. Md. Mazadul Hasan Shishir Web2 May 2014 · Temporary hardness is due to the presence of calcium hydrogencarbonate Ca (HCO3)2 (aq) and magnesium hydrogencarbonate Mg (HCO3)2 (aq). Both calcium …
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Web5 Oct 2024 · Based on the type of anions (Cl-, SO42-, HCO3-) associated with Ca2+/Mg2+ ions, the hardness is categorized into temporary (carbonate, HCO3-) hardness & permanent (non-carbonate, Cl-, SO42-) hardness. ... EDTA forms stable complex with hardness causing salts and is used in the removal of scale and sludge forming impurities in industrial boilers. WebThis set of Applied Chemistry Questions and Answers for Campus interviews focuses on “Estimation of Hardness – 2”. 1. Estimation of hardness can be determined by ________ types. 2. Total hardness of water can be determined by titrating the fixed volume of water against the standard ___________ solution. 3. infowars111
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WebTemporary hardness is due to the presence of magnesium and calcium hydrogen carbonates. The permanent hardness of water is caused due to the presence of soluble salts of magnesium and calcium in the form of chlorides and sulphates in water. Temporary hardness can be removed by the following methods: (i) By boiling (ii) By Clark's Method. In … Web12 Apr 2024 · Soft water, only 101 ppm total dissolved solids. 54 ppm "Total Hardness" (as CaCO3), 14 ppm (as CaCO3) alkalinity. "Permanent Hardness" should be "Total Hardness" less "Temporary Hardness" (which for UK tap water "Temporary Hardness" will be due almost entirely to "bicarbonate", as will "alkalinity"). WebUpon heating the bicarbonate salts decompose and precipitates out in the form of scaling/white deposition. Therefore Water hardness that is caused by calcium/magnesium bicarbonate is known as temporary. Reaction involved: Mg(HCO 3) 2→MgCO 3↓+H 2O+CO 2 hardness from the other salts is called permanent mitas touring force teszt