The Student Room Group

Entropy!

Hia everyone! I'm just on the entropy topic and trying to understand the different relationships between gibbs free energy, enthalpy change and change in entropy. (ch5 work)
If I'm right;
exothermic reactions --> tend to be feasible if -
endothermic reactions---> + therefore tend not to be feasible
Entropy--> + means feasible
--> - not feasible
Gibbs free energy --> - feasible
--> + means not feasible

Am I right so far and the fact that enthalpy change of endothermic reactions mean a spontaneous reaction is not totally unfeasible but fetermined by the free energy calculated by the equation deltaG= deltaH - T deltaS
sorry just trying to get my head around it
Thanks
Any reaction is feasible if the change in free energy (ΔG) is negative - which is a combination of the enthalpy and entropy in the equation you've mentioned.

Quick Reply

Latest