Domanda del libro di testo
If a catalyst changes the activation energy of a forward reaction from 28.0 kcal/mol to 23.0 kcal/mol, what effect does it have on the reverse reaction?
2005
views
Ch.7 Chemical Reactions: Energy, Rate and Equilibrium
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
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
Tutti i libri di testo
McMurry 8th EditionCh.7 Chemical Reactions: Energy, Rate and EquilibriumProblema 44
McMurry 8th EditionCh.7 Chemical Reactions: Energy, Rate and EquilibriumProblema 44Capitolo 7, Problema 44
Why does increasing concentration generally increase the rate of a reaction?
Guida verificata passo dopo passo1
Understand the concept of reaction rate: The rate of a chemical reaction refers to how quickly reactants are converted into products. It depends on the frequency and energy of collisions between reactant molecules.
Recall the collision theory: According to collision theory, for a reaction to occur, reactant molecules must collide with sufficient energy (activation energy) and proper orientation.
Relate concentration to collision frequency: Increasing the concentration of reactants means there are more molecules or ions in a given volume. This increases the likelihood of collisions between reactant particles.
Explain the effect on reaction rate: With more frequent collisions, the number of successful collisions (those with sufficient energy and correct orientation) also increases, leading to a faster reaction rate.
Summarize the relationship: In general, a higher concentration of reactants results in a higher reaction rate because it increases the probability of effective collisions as described by the collision theory.
Risposta video verificata per un problema simile:
Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
1mConcetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Collision Theory
Collision theory posits that for a reaction to occur, reactant particles must collide with sufficient energy and proper orientation. Increasing the concentration of reactants raises the number of particles in a given volume, leading to more frequent collisions. This increased frequency enhances the likelihood of effective collisions, thereby accelerating the reaction rate.
Video consigliato:
Percorso guidato
05:22
Atomic Theory
Reaction Rate
The reaction rate refers to the speed at which reactants are converted into products in a chemical reaction. It is influenced by several factors, including concentration, temperature, and the presence of catalysts. Higher concentrations typically result in a higher reaction rate due to the increased number of reactant molecules available to participate in the reaction.
Video consigliato:
Percorso guidato
01:07Rate of Reaction Concept 1
Equilibrium Shift
In reversible reactions, increasing the concentration of reactants can shift the equilibrium position according to Le Chatelier's principle. This shift favors the formation of products, thus increasing the rate at which products are formed. Understanding this concept is crucial for predicting how changes in concentration affect the dynamics of a chemical reaction.
Video consigliato:
Percorso guidato
03:43The Equilibrium Constant Example 1
Pratica correlata
Domanda del libro di testo
The following reaction is used in the industrial synthesis of polyvinyl chloride (PVC) polymer:
Cl2(g) + H2C=CH2(g) → ClCH2CH2Cl(l) ∆H = –52 kcal/mol (–218 kJ/mol)
a. Is ∆S positive or negative for this process?
1471
views
Domanda del libro di testo
For the reaction C(s, diamond) → C(s, graphite), ∆G = -0.693 kcal/mol (-2.90 kJ/mol) at 25 °C.
a. According to this information, do diamonds spontaneously turn into graphite?
1897
views
Domanda del libro di testo
What is a catalyst, and what effect does it have on the activation energy of a reaction?
2614
views
Domanda del libro di testo
For the reaction 2 Hg(l) + O2(g) → 2 HgO(s), ∆H = –43 kcal/mol (–180 kJ/mol).
b. Under what conditions would you expect this process to be spontaneous?
1673
views
Domanda del libro di testo
Which reaction is faster, one with Eact = +10 kcal/mol(+41.8 kJ/mol) or one with Eact = +5 kcal/mol(+20.9 kJ/mol)? Explain.
2510
views