Spontaneous reactions won't happen unless the total entropy change in positive(/S+).
There is an entropy change between the reactants and products - the entropy change of the system.
The entropy of the surroundings changes aswell because energy is transferred to or from the system.
Total entropy change is the sum of the entropy changes of the system and the surroundings.
S total = S system + S surroundings in joul per kelvin per mole jkmol.
S system = S products - S reactants
S surroundings = - /H in joule per mole divided by T in kelvin.
Comments
No comments have yet been made