Molecule size on molar entropy

[Alexis Harouni]

Between two molecules, why does the bigger one have higher molar entropy? Like between HBr (g) and HF (g) can someone please explain conceptually?

[905934067]

The molar entropy of a molecule is related to its molecular complexity and freedom of motion. Because larger molecules typically have more atoms and more ways for those atoms to move and arrange themselves in space, they lead to greater entropy. In the case of HBr (g) and HF (g), HF is a larger molecule with more atoms than HBr. This increased complexity allows HF molecules to have more possible arrangements and orientations, resulting in higher molar entropy compared to HBr. Hope this helps!

[Yusheng_Crabtree_2H]

In the case of HBr (g) and HF (g), Br is a larger atom than F and provides more ways for electrons to arrange around the nuclei.

[805981422]

The larger a molecule is, the more complex it is. In other words, there are more possibilities for different arrangements of atoms. Thus, it will have a higher molar entropy, since entropy is a measure of disorder. More possibilities for configurations = more disorder.

[Hritika Chaturvedi 3L]

The larger molecule (HBr) has higher molar entropy because it has more atoms, leading to increased disorder and freedom of motion compared to the smaller molecule (HF).