Domanda del libro di testo
The following diagrams represent two similar reactions that have achieved equilibrium:
<IMAGE>
a. Write the expression for the equilibrium constant for each reaction.
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Ch.7 Chemical Reactions: Energy, Rate and Equilibrium
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
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McMurry 8th EditionCh.7 Chemical Reactions: Energy, Rate and EquilibriumProblema 15
McMurry 8th EditionCh.7 Chemical Reactions: Energy, Rate and EquilibriumProblema 15Capitolo 7, Problema 15
Is the yield of SO3 at equilibrium favored by a higher or lower pressure? By a higher or lower temperature?
2 SO2(g) + O2 ⇌ 2 SO3(g) ∆H = -47 kcal/mol
Guida verificata passo dopo passo1
Analyze the chemical equation: The reaction involves 2 moles of SO2 gas and 1 mole of O2 gas combining to form 2 moles of SO3 gas. This means there is a decrease in the total number of gas molecules (from 3 moles to 2 moles).
Apply Le Chatelier's Principle to pressure: Since the reaction results in fewer gas molecules, increasing the pressure will favor the forward reaction (formation of SO3) to reduce the total number of gas molecules. Conversely, lowering the pressure would favor the reverse reaction.
Examine the enthalpy change (∆H): The reaction is exothermic (∆H = -47 kcal/mol), meaning it releases heat as it proceeds in the forward direction.
Apply Le Chatelier's Principle to temperature: For an exothermic reaction, increasing the temperature adds heat to the system, which shifts the equilibrium toward the reverse reaction (formation of reactants). Lowering the temperature removes heat, favoring the forward reaction (formation of SO3).
Summarize the findings: The yield of SO3 at equilibrium is favored by higher pressure (due to fewer gas molecules in the products) and lower temperature (due to the exothermic nature of the reaction).
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Le Chatelier's Principle
Le Chatelier's Principle states that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change. In the context of pressure, increasing pressure favors the side of the reaction with fewer moles of gas, while decreasing pressure favors the side with more moles.
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09:34
The following is an endothermic reaction where Kc = 6.73 x 103.For each of the choices below predict in which direction the reaction will proceed
Equilibrium Constant (K)
The equilibrium constant (K) quantifies the ratio of the concentrations of products to reactants at equilibrium for a given reaction at a specific temperature. Changes in temperature can affect the value of K, with exothermic reactions like the formation of SO3 shifting equilibrium to favor products at lower temperatures.
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02:50The Equilibrium Constant Concept 1
Exothermic Reactions
Exothermic reactions release heat, indicated by a negative enthalpy change (∆H). For the reaction producing SO3, the negative ∆H suggests that lowering the temperature will favor the formation of products, as the system shifts to absorb the heat released during the reaction.
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02:38Endothermic & Exothermic Reactions
Pratica correlata
Domanda del libro di testo
The following diagrams represent two similar reactions that have achieved equilibrium:
<IMAGE>
b. Calculate the value for the equilibrium constant for each reaction.
1674
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Domanda del libro di testo
What effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen?
C(s) + 2 H2(g) ⇌ CH4(g) ∆H = -18 kcal/mol (-75kJ/mol)
b. Increasing pressure by decreasing volume
1744
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Domanda del libro di testo
What effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen?
C(s) + 2 H2(g) ⇌ CH4(g) ∆H = -18 kcal/mol (-75kJ/mol)
c. Allowing CH4 to escape continuously from the reaction vessel
1804
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Domanda del libro di testo
Do the following reactions favor reactants or products at equilibrium? Give relative concentrations at equilibrium.
c. Fe2O3(s) + 3 CO(g) ⇌ 2 Fe(s) + 3 CO2(g) K (at 727 °C) = 24.2
1781
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Domanda del libro di testo
What effect do the listed changes have on the position of the equilibrium in the reaction of carbon with hydrogen?
C(s) + 2 H2(g) ⇌ CH4(g) ∆H = -18 kcal/mol (-75kJ/mol)
a. Increasing temperature
1924
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