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Which chemical compound would be left mostly when we evaporate mineral water that contains 73 calcium mg/l 8 magnesium 1 potassium 28 chloride 5 hydrogen carbonate 388 sulphate
Accepted Answer
After evaporating the mineral water, the remaining solid residue would mainly consist of calcium sulfate (CaSO₄), magnesium sulfate (MgSO₄), and calcium chloride (CaCl₂). The high concentration of sulfate ions (388 mg/L) and calcium ions (73 mg/L) would lead to the formation of calcium sulfate. Similarly, magnesium sulfate would also be present due to the significant concentration of magnesium ions (8 mg/L). The presence of chloride ions (28 mg/L) would result in the formation of calcium chloride. Potassium chloride (KCl) could also be present, but in smaller amounts due to the low concentration of potassium ions (1 mg/L). The hydrogen carbonate ions (5 mg/L) would decompose into carbon dioxide (CO₂) and water (H₂O) during evaporation.
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