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Collision Theory: Ozone

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Wize University Chemistry Textbook > Kinetics

Reaction Mechanisms

7 Activities

Wize High School Grade 12 Chemistry Textbook > Rates of Reactions

Collision Theory & Activated Complex Theory

7 Activities

The decomposition of ozone to oxygen gas can also occur in the presence of chlorine atoms. A proposed mechanism for this exothermic reaction is as follows:

Cℓ(g)+O3(g)→CℓO(g)+O2(g)slowO3(g)→O(g)+O2(g)fastCℓO(g)+O(g)→Cℓ(g)+O2(g)fast\begin{aligned}&C\ell(g)+O_3(g)\rightarrow C\ell O(g)+O_2(g)&slow\\ &O_3(g)\rightarrow O(g)+O_2(g)&fast \\&C\ell O(g)+O(g)\rightarrow C\ell(g)+O_2(g)&fast\end{aligned}
Which of these statements about this reaction is true?
More Reaction Mechanisms Questions:
The decomposition of ozone to oxygen gas can also occur in the presence of chlorine atoms. A proposed mechanism for this exothermic reaction is as follows:
Cℓ(g)+O3(g)→CℓO(g)+O2(g)slowO3(g)→O(g)+O2(g)fastCℓO(g)+O(g)→Cℓ(g)+O2(g)fast\begin{aligned}&C\ell(g)+O_3(g)\rightarrow C\ell O(g)+O_2(g)&slow\\ &O_3(g)\rightarrow O(g)+O_2(g)&fast \\&C\ell O(g)+O(g)\rightarrow C\ell(g)+O_2(g)&fast\end{aligned}
Which of these statements about this reaction is true?
The decomposition of ozone to oxygen gas can also occur in the presence of chlorine atoms. A proposed mechanism for this exothermic reaction is as follows:
Cℓ(g)+O3(g)→CℓO(g)+O2(g)slowO3(g)→O(g)+O2(g)fastCℓO(g)+O(g)→Cℓ(g)+O2(g)fast\begin{aligned}&C\ell(g)+O_3(g)\rightarrow C\ell O(g)+O_2(g)&slow\\ &O_3(g)\rightarrow O(g)+O_2(g)&fast \\&C\ell O(g)+O(g)\rightarrow C\ell(g)+O_2(g)&fast\end{aligned}
Which of these statements about this reaction is true?
A proposed mechanism for the reaction of NO2 with CO is shown below. Which of the given rate laws would accurately describe a reaction with this mechanism?
NO2(g)+NO2(g)→NO3(g)+NO(g)slowNO3(g)+CO(g)→NO2(g)+CO2(g)fastNO2(g)+CO(g)→NO(g)+CO2(g)overall\def\arraystretch{1.5} \begin{array}{cc} NO_2(g)+NO_2(g)\to NO_3(g)+NO(g) & slow \\ NO_3(g)+CO(g)\to NO_2 (g) +CO_2 (g) & fast \\ \hline NO_2(g)+CO(g)\to NO(g)+CO_2(g) & overall \end{array}
Practice: Reaction Mechanisms
For the reaction:
2NOCl(g)⟶2NO(g)+Cl2(g)Rateexp=k[NOCl]22NOCl(g)⟶2NO(g)+Cl_2 (g)\qquad Rate_{exp}=k[NOCl]^2
The following three mechanisms have been proposed :
Rate Laws: Reaction Mechanisms
For the reaction:
2NOCl(g)⟶2NO(g)+Cl2(g)Rateexp=k[NOCl]22NOCl(g)⟶2NO(g)+Cl_2 (g)\qquad Rate_{exp}=k[NOCl]^2
The following three mechanisms have been proposed :
A proposed mechanism for the reaction of NO2 with CO is shown below. Which of the given rate laws would accurately describe a reaction with this mechanism?
NO2(g)+NO2(g)→NO3(g)+NO(g)slowNO3(g)+CO(g)→NO2(g)+CO2(g)fastNO2(g)+CO(g)→NO(g)+CO2(g)overall\def\arraystretch{1.5} \begin{array}{cc} NO_2(g)+NO_2(g)\to NO_3(g)+NO(g) & slow \\ NO_3(g)+CO(g)\to NO_2 (g) +CO_2 (g) & fast \\ \hline NO_2(g)+CO(g)\to NO(g)+CO_2(g) & overall \end{array}
The proposed mechanism for a reaction is:
A(g)+B(g)↔X(g)(Fast)A_{(g)}+B_{(g)} \leftrightarrow X_{(g)}(Fast)
X(g)+C(g)↔Y(g)(Slow)X_{(g)} +C_{(g)}\leftrightarrow Y_{(g)}(Slow)
Reaction mechanisms: Rate law
The rate law for the overall reaction A + 2B → E was experimentally determined to be: Rate = k[A]2[B]
Which of these proposed mechanisms could explain this observed rate law?
Hydrogen spontaneously decomposes into two hydrogen atom radicals. One of these radicals reacts with an equivalent of fluorine gas to form one equivalent of HF and one fluorine atom. This fluorine atom reacts with a hydrogen atom to form another equivalent of HF. Write the mechanism of this reaction as series of elementary steps. Assign the molecularity of each step and write the overall reaction.
Collision Theory: Molecularity
Hydrogen spontaneously decomposes into two hydrogen atom radicals. One of these radicals reacts with an equivalent of fluorine gas to form one equivalent of HF and one fluorine atom. This fluorine atom reacts with a hydrogen atom to form another equivalent of HF. Write the mechanism of this reaction as series of elementary steps. Assign the molecularity of each step and write the overall reaction.
More Collision Theory & Activated Complex Theory Questions:
The decomposition of ozone to oxygen gas can also occur in the presence of chlorine atoms. A proposed mechanism for this exothermic reaction is as follows:
Cℓ(g)+O3(g)→CℓO(g)+O2(g)slowO3(g)→O(g)+O2(g)fastCℓO(g)+O(g)→Cℓ(g)+O2(g)fast\begin{aligned}&C\ell(g)+O_3(g)\rightarrow C\ell O(g)+O_2(g)&slow\\ &O_3(g)\rightarrow O(g)+O_2(g)&fast \\&C\ell O(g)+O(g)\rightarrow C\ell(g)+O_2(g)&fast\end{aligned}
Which of these statements about this reaction is true?
The decomposition of ozone to oxygen gas can also occur in the presence of chlorine atoms. A proposed mechanism for this exothermic reaction is as follows:
Cℓ(g)+O3(g)→CℓO(g)+O2(g)slowO3(g)→O(g)+O2(g)fastCℓO(g)+O(g)→Cℓ(g)+O2(g)fast\begin{aligned}&C\ell(g)+O_3(g)\rightarrow C\ell O(g)+O_2(g)&slow\\ &O_3(g)\rightarrow O(g)+O_2(g)&fast \\&C\ell O(g)+O(g)\rightarrow C\ell(g)+O_2(g)&fast\end{aligned}
Which of these statements about this reaction is true?
For reaction AB+C⇌A+BCAB+C \rightleftharpoons A+BC, the activation energy for the forward reaction is 10 kJ/(mol·rxn)–1. When we increase the temperature until the average collision energy of the particles is larger than 10 kJ/mol, there are still collisions between AB and C that are not successful reactions. Why not? Select all that apply
Collision Theory: Determining the Activation Energy
Use the graph below to calculate the activation energy of the reaction below.
CH2CH2(g)+Cl2(g)→CH2ClCH2Cl(g)\textrm{CH}_2\textrm{CH}_{2(g)} + \textrm{Cl}_{2(g)}\rightarrow \textrm{CH}_2\textrm{Cl}\textrm{CH}_2\textrm{Cl}_{(g)}