Answer:
D. Changing the temperature will change Keq.
Step-by-step explanation:
The equilibrium constant expresses the relationship between the molar concentration of reactants and products. This constant is the Keq. It is temperature dependent and constant at a given temperature.
A change in temperature of an equilibrium system shifts the system to a new equilibrium point. A rise in temperature shifts the equilibrium position to the direction that absorbs heat and vice versa.
In summary, a shift in equilibrium which results from temperature change is actually a change in value of the equilibrium constant.