Explain Le Chatelier's principle and apply it to the provided chemical equilibrium graphs.

6.1 Le Chatelier's principle states that if a change of condition (such as temperature, pressure, or concentration of reactants) is applied to a system in equilibrium, the system will shift in a direction that relieves the stress.

6.2 The parallel lines after $t = 5$ minutes in graph A represent that the system has reached a state of chemical equilibrium, where the concentrations of reactants and products remain constant.

6.3 The forward reaction is EXOTHERMIC.

6.4

Step 1: Compare the equilibrium concentrations at different temperatures.
Graph A is at 298 K, and Graph B is at 398 K