Chapter 15, Problem 15.69QP

For which of the following reactions will a change in volume not affect the position of the equilibrium? (Select all that apply.)

$\begin{array}{l}\left(\text{a}\right)\text{MgO}(s)+{\text{CO}}_{\text{2}}\left(g\right)\rightleftarrows {\text{MgCO}}_{\text{3}}\left(s\right)\\ \left(\text{b}\right){\text{H}}_{\text{2}}\left(g\right)+{\text{Cl}}_{\text{2}}\left(g\right)\rightleftarrows \text{2HCl}\left(g\right)\\ \left(\text{c}\right){\text{BaCO}}_{\text{3}}\left(s\right)\rightleftarrows \text{BaO}\left(s\right)+{\text{CO}}_{\text{2}}\left(g\right)\\ \left(\text{d}\right){\text{Br}}_{\text{2}}\left(l\right)+{\text{H}}_{\text{2}}\left(g\right)\rightleftarrows \text{2HBr}\left(g\right)\\ \left(\text{e}\right)\text{C}\left(\text{graphite}\right)+{\text{CO}}_{\text{2}}\left(g\right)\rightleftarrows \text{2CO}\left(g\right)\end{array}$