Answer to Question #98796 in General Chemistry for Christiana

Question

Write a balance chemical equation on how caustic soda and washing soda can be used to remove calcium and magnesium ion.

Answer 1

Ca²⁺(aq) + CO₃^2–(aq) → CaCO₃(s)

Mg²⁺(aq) + CO₃^2–(aq) → MgCO₃(s)

Ca²⁺(aq) + HCO₃^-(aq) → CaCO₃(s) + H⁺

Mg²⁺(aq) + HCO₃^-(aq) → MgCO₃(s) + H⁺