Asked by Morgan
If ammonia is manufactured at 356 K, is the reaction spontaneous, given that the enthalpy and entropy change for the reaction are -93 kJ/mol and -198 J/mol K, respectively?
A. Yes, the ΔG is -92 kJ/mol.
B. No, the ΔG is 92 kJ/mol.
C. No, the ΔG is 22.5 kJ/mol.
D. Yes, the ΔG is -22.5 kJ/mol.
A. Yes, the ΔG is -92 kJ/mol.
B. No, the ΔG is 92 kJ/mol.
C. No, the ΔG is 22.5 kJ/mol.
D. Yes, the ΔG is -22.5 kJ/mol.
Answers
Answered by
DrBob222
dG = dH - TdS
dG = -93 - 356(-0.198) = ?
If - it's spontaneous?
dG = -93 - 356(-0.198) = ?
If - it's spontaneous?
Answered by
Manya
yes, it is spontaneous at -22.5 kJ/mol
Answered by
Manya
you have to work backwards
try all of the answers:
dG = -22.5 = -93 - (-198 x T)
= -22.5 + 93 = - (-198 x T)
= 70.5 = 198 x T
= 0.356 = T
we see that C is the only answer that works
try all of the answers:
dG = -22.5 = -93 - (-198 x T)
= -22.5 + 93 = - (-198 x T)
= 70.5 = 198 x T
= 0.356 = T
we see that C is the only answer that works
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.