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Consider the following reaction taking place in a 1.00 L rigid container at 293 K.

$$\textrm{CaCO}_3(s) \rightleftharpoons \textrm{CaO}(s)+\textrm{CO}_2(g) \qquad K_p=1.03$$

Four experiments are run using different initial amounts of reactants and/or products. In each experiment, the reaction is run until equilibrium is reached.

Which experiment (A-D) will have the smallest equilibrium partial pressure of $\textrm{CO}_2$?


Experiment A: $50.0 \textrm{ g CaCO}_3 (s)$, $50.0 \textrm{ g CaO}(s)$, and $1.50 \textrm{ atm CO}_2(g)$ are reacted initially.


Experiment B: $50.0 \textrm{ g CaO} (s)$ and $1.50 \textrm{ atm CO}_2(g)$ are reacted initially.


Experiment C: $50.0 \textrm{ g CaCO}_3 (s)$ and $50.0 \textrm{ g CaO}(s)$ are reacted initially.


Experiment D: $50.0 \textrm{ g CaCO}_3 (s)$ are reacted initially.


The equilibrium partial pressure of $\textrm{CO}_2 (g)$ will be the same in all four experiments.

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