A chemical engineer is studying the two reactions shown in the table below. In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 106.0 °C and constant total pressure. Then, she 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 her 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. MgO (s) + 2HCl(g) MgCl₂ (s) + H₂O(1) P₁(s) + 20HF (g) → 4PF, (g) + 10H₂(g) ΔΗ = ~140. kJ J K AS-454. AG = Which is spontaneous? Othis reaction O the reverse reaction O neither AH-1005. kJ J AS = -0- AG= 0. kJ Which is spontaneous? Othis reaction O the reverse reaction Oneither Un
A chemical engineer is studying the two reactions shown in the table below. In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 106.0 °C and constant total pressure. Then, she 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 her 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. MgO (s) + 2HCl(g) MgCl₂ (s) + H₂O(1) P₁(s) + 20HF (g) → 4PF, (g) + 10H₂(g) ΔΗ = ~140. kJ J K AS-454. AG = Which is spontaneous? Othis reaction O the reverse reaction O neither AH-1005. kJ J AS = -0- AG= 0. kJ Which is spontaneous? Othis reaction O the reverse reaction Oneither Un
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter16: Thermodynamics: Directionality Of Chemical Reactions
Section: Chapter Questions
Problem 16.DCP
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Transcribed Image Text:A chemical engineer is studying the two reactions shown in the table below.
In each case, she fills a reaction vessel with some mixture of the reactants and products at a constant temperature of 106.0 °C and constant total pressure.
Then, she 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 her 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.
MgO (s) + 2HC1(g) → MgCl₂ (s) + H₂O (1)
P₁(s) + 20HF (g) →
- 4PF₂ (g) + 10H₂(g)
AH-140. kJ
AS 454.
AG = OKJ
Which is spontaneous?
Othis reaction
AS =
K
the reverse reaction
O neither
AH-1005. kJ
J
K
AG= 0. kJ
Which is spontaneous?
this reaction
O the reverse reaction
O neither
X
00
Expert Solution
Step 1
Answer:
In this question on the basis of value of we have to decide which reaction is spontaneous and for that we can use the relation Gibbs free energy change, enthalpy change and entropy change.
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