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23 December, 00:48

What is the equilibrium constant expression for dissolving calcium carbonate in water?

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  1. 23 December, 01:11
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    Equation for dissolving calcium carbonate in water:

    CaCO3 (s) ⇄ Ca²⁺ (aq) + CO₃²⁻ (aq).

    The equilibrium constant expression for this reaction: K = [Ca²⁺] [CO₃²⁻] / [CaCO3 (s) ], but concentration of CaCO3 (s) is 1 (for all solid), so the simpler expression for the equilibrium constant is:K = [Ca²⁺] [CO₃²⁻].
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