Chemistry

Problem

The endothermic decomposition

\mathrm{CaCO_3(s)\;\rightleftharpoons\;CaO(s)+CO_2(g)}\qquad (\Delta H>0)

is at equilibrium in a rigid, sealed container. Consider the following four independent changes. A. Heat the container by

15\,\mathrm{K}

. B. Instantaneously double the container volume. C. Remove a small amount of

\mathrm{CO_2(g)}

with a syringe. D. Add additional solid

\mathrm{CaCO_3}

. Rank the changes from greatest to least increase in the partial pressure of

\mathrm{CO_2(g)}

at the new equilibrium. Combine any ties.