why does water have higher entropy than helium?


by MathewsMD
Tags: entropy, helium, water
MathewsMD
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#1
Feb8-14, 07:26 PM
P: 285
Hi,

Under standard conditions, why does water have higher entropy than helium? Isn't helium a gas? I understand that water has more atoms, but it seems more ordered and is a liquid. I'm not sure how a qualitative analysis could lead to the conclusive result that water is higher in entropy compared to helium..

Could anyone please help in guiding me how to properly think about this?
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mfb
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#2
Feb8-14, 10:47 PM
Mentor
P: 10,846
Entropy per volume?
Water has much more molecules per volume, and those molecules have more freedom - in addition to the position, they can also vary in their orientations. Water is not ordered.


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