Changes in concentration do not change the value of Kc as long as the temperature remains constant. However, changes in temperature change the value of most equilibrium constants. Please explain.
2007-02-22 08:18:45 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Equilibrium constants for any reaction come from a ratio of the rate constants for the forward and reverse reactions. Rate constants are temperature dependent. So, as the temperature changes, the rate constants both change but by different amounts. Consequently, the equilibrium constant for the reaction will change.
2007-02-22 08:30:05 · answer #1 · answered by hcbiochem 7 · 0⤊ 0⤋
The equilibrium constant is related to the free energy of the reaction. If there is an entropy change(which there usually is), then the free energy will be different from the enthalpy based on temperature. As temperature changes the free energy changes. Thus the equilibrium constant changes.
2007-02-22 08:29:14 · answer #2 · answered by Roy E 4 · 0⤊ 0⤋