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Things that often lead to higher molar entropy are more complex structures (the bonds can absorb more vibration energy), heavier atoms, and formation of gas particles. Therefore, size and complexity are helpful to determine the molar entropy.
Yes, the larger a molecule is, the larger it's molar entropy. This is because a larger molecule has more possible substates, positions, or orientations. It's degeneracy is higher. For example, a linear molecule can have two possible orientations, whereas a trigonal planar molecule could have more.
Generally, the heavier the substance, the higher the molar entropy. This occurs because the energy levels are closer together, which means there are more possible orientations the substance can acquire. Therefore, it will have a higher molar entropy.
Between a solid and liquid, which substance would have a higher molar entropy? Would a heavy solid have a higher or lower molar entropy than a lighter liquid or vice versa? Would a lighter solid have a higher or lower molar entropy than a heavy liquid?
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