Based on the positive value of ΔG°, dissolution of borax is not spontaneous under standard conditions at 298K. Why did borax in the lab dissolve in water if the process was not spontaneous? [Hint: think about what the “standard conditions” are for thermodynamic values.]
The temp. of experiment was 40.0 °C, does this have anything to do with this?
Chm question?
2020-05-10 10:34 am
回答 (1)
2020-05-10 8:16 pm
✔ 最佳答案
When T = 298 K (25°C):ΔG° > 0
Hence, the process is not spontaneous at 298 K (25°C).
When T = 313 K (40°C)
ΔG = ΔG° + R T ln(K) < 0
Hence, the process is spontaneous at 313 K (40°C).
收錄日期: 2021-04-18 18:29:12
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