Name a method that could be used to separate magnesium hydroxide from sea water

Question

Kaia Palmer

Chemistry

9 July, 08:51

Name a method that could be used to separate magnesium hydroxide from sea water

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Answers (1)

Know the Answer?

Meadow Bright · Answer 1

Add limewater

Explanation:

Ca (OH) ₂ is about 1000 times more soluble than Mg (OH) ₂

If you add limewater to the seawater, the magnesium ions will precipitate out as magnesium hydroxide.

Mg²⁺ (aq) + 2OH⁻ (aq) ⟶ Mg (OH) ₂ (s)