(a)
Interpretation:
The roles of
Concept introduction:
Rate of a reaction: It represents the speed at which a
Rate of reaction depends on time, temperature, pressure, concentration, and
(b)
Interpretation:
The reason for fluorine radical is not important in the given mechanism has to be explained.
Concept introduction:
Rate of a reaction: It represents the speed at which a chemical reaction runs. How much concentration of reactants consumed and how much concentration of product formed in a unit of time is said to be rate of reaction.
Rate of reaction depends on time, temperature, pressure, concentration, and
(c)
Interpretation:
One suggestion to reduce the concentration of chlorine radicals is to add hydrocarbons such as ethane to the stratosphere. How this will work has to be explained.
Concept introduction:
Rate of a reaction: It represents the speed at which a chemical reaction runs. How much concentration of reactants consumed and how much concentration of product formed in a unit of time is said to be rate of reaction.
Rate of reaction depends on time, temperature, pressure, concentration, and
(d)
Interpretation:
Potential energy versus reaction progress diagrams for the uncatalyzed and catalyzed destruction of ozone has to be drawn.
Concept introduction:
Rate of a reaction: It represents the speed at which a chemical reaction runs. How much concentration of reactants consumed and how much concentration of product formed in a unit of time is said to be rate of reaction.
Rate of reaction depends on time, temperature, pressure, concentration, and
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Chemistry
- What is the biological importance of stratospheric ozone? Explain.arrow_forwardThe 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1) C10(g) + O₂(g) → Cl(g) +20₂(g) AH (2) 20,(g) →30₂(g) (3) 0₂(g) + Cl(g) → CIO(g) + O₂(g) Allis= = -122.8 kJ AH = -285.3 kJ AHin = ? kJarrow_forwardThe 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. CIO(g) + O3(g) -> Cl(g) +202(g) AHxn = -122.8 kJ (1) (2) 203(g) - - 302(g) AHxn=-285.3 kJ (3) 03(g) + Cl(g) - CIO(g) + O2(g) AHixn= ? AHixn= kJarrow_forward
- The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1)ClO(g)+O3(g)⟶Cl(g)+2O2(g)Δ?∘rxn=−122.8 kJ (2)2O3(g)⟶3O2(g)Δ?∘rxn=−285.3 kJ (3)O3(g)+Cl(g)⟶ClO(g)+O2(g) Δ?∘rxn= ?arrow_forwardThe 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1)ClO(g)+O3(g)⟶Cl(g)+2O2(g)Δ?∘rxn=−122.8 kJ(2)2O3(g)⟶3O2(g)Δ?∘rxn=−285.3 kJ(3)O3(g)+Cl(g)⟶ClO(g)+O2(g) Δ?∘rxn= ?(1)ClO(g)+O3(g)⟶Cl(g)+2O2(g)ΔHrxn°=−122.8 kJ(2)2O3(g)⟶3O2(g)ΔHrxn°=−285.3 kJ(3)O3(g)+Cl(g)⟶ClO(g)+O2(g) ΔHrxn°= ? Δ?∘rxn=ΔHrxn°=arrow_forwardThe 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCs) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1)ClO(g)+O3(g)⟶Cl(g)+2O2(g)ΔH∘rxn=−122.8 kJ(2)2O3(g)⟶3O2(g)ΔH∘rxn=−285.3 kJ(3)O3(g)+Cl(g)⟶ClO(g)+O2(g) ΔH∘rxn= ?(1)ClO(g)+O3(g)⟶Cl(g)+2O2(g)ΔHrxn°=−122.8 kJ(2)2O3(g)⟶3O2(g)ΔHrxn°=−285.3 kJ(3)O3(g)+Cl(g)⟶ClO(g)+O2(g) ΔHrxn°= ? ΔH∘rxn=ΔHrxn°=__________________________________________kJarrow_forward
- The 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCS) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1) CIO(g) + 0;(g) Cl(g) + 20,(g) AHxn = -122.8 kJ AHan = -285.3 kJ (2) 203(g) → 30,(g) (3) 0,(g) + Cl(g) → CIO(g) + 0,(g) AHn = ?arrow_forwardThe 1995 Nobel Prize in Chemistry was shared by Paul Crutzen, F. Sherwood Rowland, and Mario Molina for their work concerning the formation and decomposition of ozone in the stratosphere. Rowland and Molina hypothesized that chlorofluorocarbons (CFCS) in the stratosphere break down upon exposure to UV radiation, producing chlorine atoms. Chlorine was previously identified as a catalyst in the breakdown of ozone into oxygen gas. Using the enthalpy of reaction for two reactions with ozone, determine the enthalpy of reaction for the reaction of chlorine with ozone. (1) C10(g) + 0,(g) - (2) 20;(g) (3) 0,(g) + Cl(g) → ClO(g) + 0, (g) Cl(g) + 2 0,(g) AH³xn -122.8 kJ > = → 30,(g) AHixn = -285.3 kJ → ClO(g) + 0,(g) AHixn = ? kJ rxnarrow_forwardThe reaction for the Haber process, the industrial production of ammonia, is N2(g) + 3H2(g) → 2NH3(g) Assume that under certain laboratory conditions ammonia is produced at the rate of 6.29 mol L-1 s-1. At what rate is hydrogen consumed?arrow_forward
- Chapter #3, Question #6: A catalyst may be defined as a substance that enhances the rate of a chemical reaction without being consumed in the process. By this definition, a catalyst would have an infinite lifetime. The ozone decomposition catalysts, however, have finite lifetimes. What are possible sinks for removal of the stratospheric catalysts, NO and ∙Cl?arrow_forwardWhat are ways in minimizing photochemical smog? Explain and cite some examples.arrow_forwardSubstances burn more rapidly in pure oxygen than in air. Explain why.arrow_forward
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