A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 20.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. AH-1212. kJ J AS = -4174. K AG = 4H₂O₂ (1) + PbS (s) PbSO4 (s) + 4H₂O (1) | kJ Which is spontaneous? this reaction the reverse reaction neither AH1237. kJ AS = AG = -28. kJ 6C(s) + 6H₂(g) + 30₂ (8) C6H₁2O6 (s) -0-X/2 Which is spontaneous? this reaction the reverse reaction neither 00 3 ?
A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 20.0 °C and constant total pressure. Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the second reaction. The results of his measurements are shown in the table. Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether, under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is spontaneous because the system is at equilibrium. AH-1212. kJ J AS = -4174. K AG = 4H₂O₂ (1) + PbS (s) PbSO4 (s) + 4H₂O (1) | kJ Which is spontaneous? this reaction the reverse reaction neither AH1237. kJ AS = AG = -28. kJ 6C(s) + 6H₂(g) + 30₂ (8) C6H₁2O6 (s) -0-X/2 Which is spontaneous? this reaction the reverse reaction neither 00 3 ?
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section18.7: The Interplay Of Kinetics And Thermodynamics
Problem 2.2ACP: It has been demonstrated that buckminsterfullerene (C60), another allotrope of carbon (Section 2.3),...
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Transcribed Image Text:A chemical engineer is studying the two reactions shown in the table below.
In each case, he fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 20.0 °C and constant total pressure.
Then, he measures the reaction enthalpy AH and reaction entropy AS of the first reaction, and the reaction enthalpy AH and reaction free energy AG of the
second reaction. The results of his measurements are shown in the table.
Complete the table. That is, calculate AG for the first reaction and AS for the second. (Round your answer to zero decimal places.) Then, decide whether,
under the conditions the engineer has set up, the reaction is spontaneous, the reverse reaction is spontaneous, or neither forward nor reverse reaction is
spontaneous because the system is at equilibrium.
AH = - - 1212. kJ
J
AS 4174.
K
Ś
?
AG =
4H₂O₂ (1) + PbS (s) PbSO4 (s) + 4H₂O (1)
☐ kJ
Which is spontaneous?
this reaction
the reverse reaction
neither
- 1237. KJ
6C (s) + 6H₂(g) + 30₂ (g)
C6H₁2O6 (s)
AH =
AS = 0
K
AG-28. kJ
Which is spontaneous?
this reaction
the reverse reaction
neither
X
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