Chemical Thermodynamics Question 483
Question: The Solvay process for making $ Na_2CO_3 $ involves the reaction
$ 2NaHCO_3Na_2CO_3(s)+H_2O(g)+CO_2(g) $
For this reaction $ \Delta H^{o}=129.2,kJ/mol, $
$ \Delta S^{o}=334.2,J/mol-K $ . From this information, the minimum temperature at which this reaction becomes spontaneous is:
Options:
A) $ 460{}^\circ C $
B) $ 1017{}^\circ C $
C) $ 113{}^\circ C $
D) the reaction is spontaneous at all temperatures
Show Answer
Answer:
Correct Answer: C
Solution:
- At $ 113^{o}C,\Delta G^{o}=0 $
