Which of the following cations are present in hard water? A) Ca²⁺ ions B) Fe³⁺ ions C) Mg²⁺ ions D) all of these

Name: Which of the following cations are present in hard water? A) Ca 2+ ions B) Fe 3+ ions C) Mg 2+ ions D) all of these
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Quizplus · Accepted Answer

Hard water contains cations such as calcium (Ca^2+), magnesium (Mg^2+), and iron (Fe^2+ or Fe^3+), which are responsible for the water's hardness. Therefore, all the options listed (A, B, C) are correct.

Which of the Following Cations Are Present in Hard Water