In Addition to the Equilibrium CaCO₃ ⇋ Ca²⁺ + CO₃^2-,additional

question 16

Multiple Choice

In addition to the equilibrium CaCO₃ ⇋ Ca²⁺ + CO₃^2-,additional equilibria can be written to give a more complete picture of calcium carbonate's solubility.Which of the following is NOT valid?

• A) + H₂O ⇋ + OH^-
• B) + H₂O ⇋ H₂CO₃ + OH^-
• C)Ca²⁺ + H₂O ⇋ CaOH⁺ + H⁺
• D)Ca²⁺ + ⇋ CaCO₃
• E)Ca²⁺ + H⁺ ⇋ CaH³⁺

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