Calculate the change in Gibbs free energy for each of the following sets of ? H
ID: 1036636 • Letter: C
Question
Calculate the change in Gibbs free energy for each of the following sets of ?H?rxn, ?S?rxn, and T. (Assume that all reactants and products are in their standard states.)
Part A
?H?rxn= 134 kJ ; ?S?rxn=? 253 J/K ; T= 299 K
Express your answer as an integer.
SubmitRequest Answer
Part B
?H?rxn=? 134 kJ ; ?S?rxn= 253 J/K ; T= 299 K
Express your answer as an integer.
SubmitRequest Answer
Part C
?H?rxn=? 134 kJ ; ?S?rxn=? 253 J/K ; T= 299 K
Express your answer as an integer.
SubmitRequest Answer
Part D
?H?rxn=? 134 kJ ; ?S?rxn=? 253 J/K ; T= 620 K
Express your answer as an integer.
Calculate the change in Gibbs free energy for each of the following sets of ?H?rxn, ?S?rxn, and T. (Assume that all reactants and products are in their standard states.)
Part A
?H?rxn= 134 kJ ; ?S?rxn=? 253 J/K ; T= 299 K
Express your answer as an integer.
?G?rxn = kJSubmitRequest Answer
Part B
?H?rxn=? 134 kJ ; ?S?rxn= 253 J/K ; T= 299 K
Express your answer as an integer.
?G?rxn = kJSubmitRequest Answer
Part C
?H?rxn=? 134 kJ ; ?S?rxn=? 253 J/K ; T= 299 K
Express your answer as an integer.
?G?rxn = kJSubmitRequest Answer
Part D
?H?rxn=? 134 kJ ; ?S?rxn=? 253 J/K ; T= 620 K
Express your answer as an integer.
Explanation / Answer
A)
?H = 134 KJ
?S = -253 J/K
= -0.253 KJ/K
T = 299 K
use:
?G = ?H - T*?S
?G = 134.0 - 299.0 * -0.253
?G = 210 KJ
Answer: 210 KJ
B)
?H = -134 KJ
?S = 253 J/K
= 0.253 KJ/K
T = 299 K
use:
?G = ?H - T*?S
?G = -134.0 - 299.0 * 0.253
?G = -210. KJ
Answer: -210. KJ
C)
?H = -134 KJ
?S = -253 J/K
= -0.253 KJ/K
T = 299 K
use:
?G = ?H - T*?S
?G = -134.0 - 299.0 * -0.253
?G = -58.353 KJ
Answer: -58 KJ
D)
?H = -134.0 KJ
?S = -253 J/K
= -0.253 KJ/K
T = 620 K
use:
?G = ?H - T*?S
?G = -134.0 - 620.0 * -0.253
?G = 22.86 KJ
Answer: 23 KJ
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