In carbonate hardness cations areans.Na+Mg2+Both Ca2+ & Mg2+Ca2+
Question
In carbonate hardness cations areans.Na+Mg2+Both Ca2+ & Mg2+Ca2+
Solution
The carbonate hardness of water is primarily caused by the presence of calcium (Ca2+) and magnesium (Mg2+) ions. Therefore, the correct answer is "Both Ca2+ & Mg2+". These ions react with bicarbonate (HCO3-) and carbonate (CO32-) anions to form insoluble precipitates, which contribute to the hardness of the water.
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