At what temperature does DH = TDS for the phase change of liquid water to gaseous water at 1 atm?

0 ⤊

At what temperature does DH = TDS for the phase change of liquid water to gaseous water at 1 atm?

A 0 K
B 100 K
C 273 K
D 373 K

2007-05-02 14:28:09 · 4 answers · asked by Blade L 1 in Science & Mathematics ➔ Chemistry

4 answers

Once, Delta H equals T delta S than the change in free energy of the system is zero, it means the reaction/physical state can not change further. It means the phase change must have taken place completely. For water the phase change from liquid water to gaseous water occurs at 100deg. C,therefore, DH=TDS will occur at 100deg. C or 373 K.
Answer D is correct.

2007-05-02 22:06:14 · answer #1 · answered by sb 7 · 0⤊ 0⤋

D 373 K

2007-05-03 03:52:33 · answer #2 · answered by ag_iitkgp 7 · 0⤊ 0⤋

D) 373 K

2007-05-03 03:45:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋

2007-05-04 00:02:20 · answer #4 · answered by mehul 1 · 0⤊ 0⤋