Saved Bookmarks
| 1. |
Explain the relationship between Gibb's standard energy change of the reaction and equilibrium constant. |
|
Answer» Solution :Gibb's free energy is the standard free energy which is equal to the difference in free energies of FORMATION of the products and reactanst both in their standard states. It is denoted by `Delta G^(@)`. Relationship between Free Energy and EQUILIBRIUM constant: when Equilibrium has not been ATTAINED, the free energy change of the reaction in any state is denoted as `Delta G` which is related to the standard free energy change of the reaction `Delta G^(@)`. `Delta G = Delta G^(@) + RT In Q` Where Q is the reaction quotient Where Q is the reaction quotient When equilibrium is attained, there is no further free energy change i.e., `Delta G = 0` and reaction quotient Q BECOMES equal to equilibrium constant. Hence, the above equation (i) COMES to be: `Delta G^(@) = - RT In K_(eq)` or `Delta G^(@) = - 2.303 RT log K_(eq)` This is the required equation. |
|