celestem4929 celestem4929
  • 26-02-2018
  • Chemistry
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What is the equilibrium constant expression for dissolving calcium carbonate in water?

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Dejanras
Dejanras Dejanras
  • 07-03-2018
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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