Fe³⁺ + SCN- ---->FeNCS²⁺
Assume that in a seprate lab exercise, the 3 equilibrium solutions were placed in a water bath and allowed to re-equilibrate at the higher temperature. As a consequence of heating, the Absorbance of the solution was found to decrease. Explain this observation, predict what will happen to the calculated Kc value for this reaction, and determine if the forward reaction is endothermic or exothermic.