Choose the the compound with the greatest positional entropy in each case.
a. 1 mol H2 (at STP) or 1 mol H2 (at 100 degrees C, 0.5 atm)
b. 1 mol N2 (at STP) or 1 mol N2 (at 100 K, 2.0 atm)
c. 1 mol H20 (s) (at 0 degrees C) or 1 mol H2O(l) (at 20 degrees C)
How do you know which has a greater positional entropy? Is there a way to determine this?
Help me please!
2007-01-27 15:19:12 · 4 answers · asked by laweezer08 1 in Science & Mathematics ➔ Chemistry
I have no idea what this so-called "positional" entropy is, but in terms of just plain entropy, in (a), the H2 has less entropy at STP than at higher temperature and reduced pressure, in (b), the N2 has less entropy at increased pressure and reduced temperature than at STP, and in (c), the water has less entropy when frozen (at 0 degrees Celsius) than when liquid. A solid has less entropy than a liquid, which has less entropy than a gas. Gases themselves have less entropy when colder or more compressed. That should help, I think.
2007-01-27 17:10:42 · answer #1 · answered by Wesley B 2 · 2⤊ 1⤋
Positional Entropy
2016-10-20 08:23:42 · answer #2 · answered by Erika 4 · 0⤊ 0⤋
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RE:
Positional Entropy?
Choose the the compound with the greatest positional entropy in each case.
a. 1 mol H2 (at STP) or 1 mol H2 (at 100 degrees C, 0.5 atm)
b. 1 mol N2 (at STP) or 1 mol N2 (at 100 K, 2.0 atm)
c. 1 mol H20 (s) (at 0 degrees C) or 1 mol H2O(l) (at 20 degrees C)
How do you know which has a...
2015-08-12 03:14:54 · answer #3 · answered by Ruben 1 · 0⤊ 0⤋
a
2007-01-27 15:29:51 · answer #4 · answered by ag_iitkgp 7 · 0⤊ 6⤋