Two metallic ions associated with hard water are
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Correct Answer: Option C
Explanation:
The correct answer is C: calcium and magnesium.
Hard water contains dissolved minerals, primarily calcium (Ca²⁺) and magnesium (Mg²⁺) ions. These minerals cause water hardness by forming insoluble salts, such as calcium carbonate (CaCO₃) and magnesium carbonate (MgCO₃), which can lead to scaling in pipes and heating systems.
So, the metallic ions associated with hard water are calcium and magnesium.
The correct answer is C: calcium and magnesium.
Hard water contains dissolved minerals, primarily calcium (Ca²⁺) and magnesium (Mg²⁺) ions. These minerals cause water hardness by forming insoluble salts, such as calcium carbonate (CaCO₃) and magnesium carbonate (MgCO₃), which can lead to scaling in pipes and heating systems.
So, the metallic ions associated with hard water are calcium and magnesium.