Write the expression for the equilibrium constant, Kc , for the following system:  CaCO3(s) ⇄⇄ Ca2+(aq) +  CO32–(aq)  a. During ocean acidification the availability of carbonate ions has decreased and the above system is no longer in equilibrium. Will the resulting reaction quotient, Qc, be larger or smaller than the equilibrium constant, Kc? b. Consider your answers to the above questions. In terms of the calcium carbonate equilibrium system, and Qc and Kc, explain why the pteropod's shell dissolves in an acidified ocean.

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