Effect of Changes in Temperature

When the temperature of a system at equilibrium is increased, a reaction occurs in the direction that absorbs heat. The above equilibrium is exothermic when the reaction proceeds to the right, ΔH° = -90 kJ. Thus if the temperature is increased, we expect the equilibrium to shift such as to absorb heat. Shifting to the right would liberate more heat, thus we expect a shift toward CO and H₂. This conclusion can also be based on Eq. (1.1.). Since ΔH° is negative, an increase in temperature will decrease K, i. e., shift the equilibrium to the left

   (1.1)