Solution Found!
(a) Draw a reaction-energy diagram for the following
Chapter 5, Problem 15P(choose chapter or problem)
\(\mathrm{CH}_{3}+\mathrm{Cl}_{2} \rightarrow \mathrm{CH}_{3} \mathrm{Cl}+\mathrm{Cl}\)
The activation energy is \(4 \mathrm{~kJ} \mathrm{~mol}(1 \mathrm{kcal} \mathrm{mol})\), and the overall \(\Delta H^{\circ}\) for the reaction is \(-109 \mathrm{~kJ} / \mathrm{mol}(-26 \mathrm{kcal} / \mathrm{mol})\)
Give the equation for the reverse reaction.What is the activation energy for the reverse reaction?
Equation Transcription:
Text Transcription:
CH3+Cl2CH3Cl+Cl
4 kJ mol (1 kcal mol)
\Delta H^\circ
-109 kJ/mol (-26 kcal/mol)
Questions & Answers
QUESTION: Draw a reaction-energy diagram for the following reaction:
\(\mathrm{CH}_{3}+\mathrm{Cl}_{2} \rightarrow \mathrm{CH}_{3} \mathrm{Cl}+\mathrm{Cl}\)
The activation energy is \(4 \mathrm{~kJ} \mathrm{~mol}(1 \mathrm{kcal} \mathrm{mol})\), and the overall \(\Delta H^{\circ}\) for the reaction is \(-109 \mathrm{~kJ} / \mathrm{mol}(-26 \mathrm{kcal} / \mathrm{mol})\)
Give the equation for the reverse reaction.What is the activation energy for the reverse reaction?
Equation Transcription:
Text Transcription:
CH3+Cl2CH3Cl+Cl
4 kJ mol (1 kcal mol)
\Delta H^\circ
-109 kJ/mol (-26 kcal/mol)
ANSWER:
Solution 15P :
Step 1:
(a) Draw a reaction-energy diagram for the following reaction:
The activation energy is 4 kJ/mol (1 kcal/mol), and the overall Ho for the reaction is
-109 kJ/mol (-26 kcal/mol).
Reaction energy diagram is the graph of reaction progress versus energy. The vertical axis represents the overall energy of the reactants and the horizontal axis represents the reaction progress.
The above reaction is a propagation reaction, as we see a radical(•CH3) in the reactant has reacted to form a free radical in the product(Cl•) . The reaction energy diagram for the above reaction is as shown below:
