Chapter 15, Problem 25E

H₂ and I₂ are combined in a flask and allowed to react according to the reaction:

   ${\text{H}}_{\text{2}}\left(\text{g}\right)+{\text{I}}_{\text{2}}\left(\text{g}\right)\rightleftharpoons \text{2HI}\left(\text{g}\right)$

Examine the figures (sequential in time) and answer the questions:

a. Which figure represents the point at which equilibrium is reached?
b. How would the series of figures change the presence of a catalyst?
c. Would there be different amounts of reactants and products in the final figure (vi) in the presence of a catalyst?