A student writes the following expression for for the reaction : Identify the species…

CHEMISTRY · Subjective · A Level · Chemistry · Chemical equilibria (Le Chatelier’s principle and Kc) · Chemical equilibria (Le Chatelier’s principle and Kc)

Problem

A student writes the following expression for KcK_c for the reaction CaCO3(s)⇌CaO(s)+CO2(g)\mathrm{CaCO_3(s)} \rightleftharpoons \mathrm{CaO(s)} + \mathrm{CO_2(g)}: Kc=[CaO][CO2][CaCO3]K_c = \frac{[\mathrm{CaO}][\mathrm{CO_2}]}{[\mathrm{CaCO_3}]} Identify the species that should be omitted and write the correct equilibrium-constant expression.

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