Consider the following generic equilibrium
in which a solid reactant is in equilibrium with a gaseous product.A(s) ? B(g) The following diagrams represent the
reaction mixture at the following points: (a) initially; (b) after a short
period of time has passed; and (c) at equilibrium. For each diagram calculate
the concentrations of the spheres representing A(s) and B(g). Assume that each block in the grid has an area of 1 cm2
and report your answer in units of spheres/cm2. (Since the spheres in the solid are not free to move the solid
only occupies the area that it covers. The spheres in the solid however are
free to move and therefore occupy the entire grid.) What do you notice about
the concentrations of A(s)and B(g)in
these representations? Write an equilibrium expression for the generic reaction
and use the results of your calculations to explain why A(s) is not included in the expression.