Boltzmann Equation for Entropy:
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Because there are only F atoms around the B, there is no variability in how the molecule is structured. However, with COF2, the Oxygen atom can be in one of three places, which causes a higher molar entropy.
Generally when the molecule tends to be more complex like the COF2 molecule it will have a higher entropy because of the different micro states there are.
Because COF2 has more microstates, its degeneracy is higher. The different atoms in COF2 can take more positions than the identical atoms in BF3 so it is at a higher entropy state.
I have a follow up question to this... are we saying the three F atoms in BF3 can only be in one set position/they are not interchangeable? It seems like they would still be able to move into different positions.
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