A 0.60mol sample of PCl(g) and a 0.70mol sample of Ch(g)are placed in a previously evacuated 1.0L rigid container, and the reaction represented above takes place. At equilibrium, the concentration of PCls(g) in the container is 0.040M a) On the graph above, carefully draw three curves, one for each of the three gases. The curves must show how the concentration of each of the three gases changes as equilibrium is established. Label each curve with the formula of the gas Concentration (M) Time b)) Explain how the slopes of the curves at equilibrium can be used to show that the rates of the forward and reverse reactions are the same at equilibrium C)) As the reaction occurs at constant temperature, does the pressure inside the container increase, decrease, or remain the same? Explain Another mixture of PCla(9), Cla(9), and PCls(g) is at equilibrium at a different temperature in a different vessel. The system at equilibrium is represented by the following box on the left Then the volume of the vessel is decreased.