Chemistry

Chemistry

Problem

For the heterogeneous equilibrium $ \mathrm{CaCO_3(s)} \rightleftharpoons \mathrm{CaO(s)} + \mathrm{CO_2(g)}whichofthefollowinggivesthecorrectexpressionforthereactionquotient which of the following gives the correct expression for the reaction quotient Q$ at an arbitrary moment? a) Q=PCO2PCaOQ=\frac{P_{\mathrm{CO_2}}}{P_{\mathrm{CaO}}} b) Q=PCO2Q=P_{\mathrm{CO_2}} c) Q=PCaOQ=P_{\mathrm{CaO}} d) Q=PCO2PCaCO3Q=\frac{P_{\mathrm{CO_2}}}{P_{\mathrm{CaCO_3}}}

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