Domanda del libro di testo
Ozone in the upper atmosphere can be destroyed by the following two-step mechanism:
Cl(g) + O3(g) → ClO(g) + O2(g)
ClO(g) + O(g) → Cl(g) + O2(g)
(b) What is the catalyst in the reaction?
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Ch.14 - Chemical Kinetics
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 14, Problema 108a
Ozone in the upper atmosphere can be destroyed by the following two-step mechanism:
Cl(g) + O3(g) → ClO(g) + O2(g)
ClO(g) + O(g) → Cl(g) + O2(g)
(a) What is the overall equation for this process?
Guida verificata passo dopo passo1
Identify the reactants and products in each step of the mechanism. In the first step, Cl(g) reacts with O3(g) to form ClO(g) and O2(g). In the second step, ClO(g) reacts with O(g) to regenerate Cl(g) and produce O2(g).
Write down the two given reactions: Step 1: Cl(g) + O3(g) → ClO(g) + O2(g) and Step 2: ClO(g) + O(g) → Cl(g) + O2(g).
Add the two reactions together to find the overall equation. When adding, cancel out any species that appear on both sides of the equation. In this case, ClO(g) and Cl(g) appear on both sides.
After canceling, combine the remaining species to form the overall equation. The reactants are O3(g) and O(g), and the products are O2(g).
Write the overall equation for the process: O3(g) + O(g) → 2O2(g). This represents the net change in the chemical species involved in the mechanism.
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Chemical Reactions
Chemical reactions involve the transformation of reactants into products through the breaking and forming of bonds. In this case, the reactions show how chlorine (Cl) interacts with ozone (O3) to form chlorine monoxide (ClO) and oxygen (O2). Understanding the stoichiometry and conservation of mass is essential for determining the overall reaction.
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Percorso guidato
03:31
Chemical Properties
Intermediate Species
In multi-step reactions, intermediate species are formed in one step and consumed in another. Here, ClO is an intermediate that facilitates the regeneration of Cl while also contributing to the destruction of ozone. Recognizing the role of intermediates is crucial for analyzing reaction mechanisms and calculating overall equations.
Video consigliato:
Percorso guidato
03:03Amphoteric Species
Overall Reaction Equation
The overall reaction equation summarizes the net change from reactants to products across all steps. To derive it, one must add the individual reactions while canceling out any species that appear on both sides. This process highlights the conservation of atoms and helps in understanding the complete chemical process involved in ozone depletion.
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Percorso guidato
07:02Overall Reaction Equilibrium Constant
Pratica correlata
Domanda del libro di testo
The gas-phase decomposition of ozone is thought to occur by the following two-step mechanism.
Step 1: O3(g) ⇌ O2(g) + O(g) (fast)
Step 2: O(g) + O3(g) → 2 O2 (slow)
(b) Derive the rate law that is consistent with this mechanism. (Hint: The product appears in the rate law.)
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Domanda del libro di testo
The following mechanism has been proposed for the reaction of NO with H2 to form N2O and H2O:
NO(g) + NO(g) → N2O2(g)
N2O2(g) + H2(g) → N2O(g) + H2O(g)
(d) The observed rate law is rate = k[NO]2[H2]. If the proposed mechanism is correct, what can we conclude about the relative speeds of the first and second reactions?
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Domanda del libro di testo
The following mechanism has been proposed for the reaction of NO with H2 to form N2O and H2O:
NO(g) + NO(g) → N2O2(g)
N2O2(g) + H2(g) → N2O(g) + H2O(g)
(a) Show that the elementary reactions of the proposed mechanism add to provide a balanced equation for the reaction.
Domanda del libro di testo
The gas-phase decomposition of ozone is thought to occur by the following two-step mechanism.
Step 1: O3(g) ⇌ O2(g) + O(g) (fast)
Step 2: O(g) + O3(g) → 2 O2 (slow)
(a) Write the balanced equation for the overall reaction.