[jsmith613]

apparently ΔS° (standard entropy change) is the change in entropy between the state of interest and when the material is at 0K OR 0C (not sure which one, could someone please clarify)

and ΔS (entropy change) is the change in entropy between two states

and are they both calculated in the same way

I ask because I am trying to understand how a system at equilibrium where (total) entropy change is 0 can still follow the equation
STANDARD entropy change = R*lnK

thanks

[jsmith613]

**Ignore me, I am impatient*