Consider the energy profile diagram below. (The profile is not drawn to scale).

A: Consider the following activation energies for the overall reaction   R → P.
Efora= 55 kJ mol−1
Ereva= 106 kJ mol−1

What is the enthalpy change for the overall reaction   R → P?
ΔH= kJ mol−1

B: Which of the following statements regarding the overall reaction   R → P is/are incorrect?  Select all that apply.

Three activated complexes are formed in this reaction

Step S→P has a smaller rate constant than step P→S

Step Q→S is the rate-determining step

The step R→Q has the largest rate constant

ΔrH is positive

Species S is an intermediate

Question

Consider the energy profile diagram below. (The profile is not drawn to scale).

A:  Consider the following activation energies for the overall reaction   R → P. 
Efora= 55 kJ mol−1
Ereva=  106 kJ mol−1
 
What is the enthalpy change for the overall reaction   R → P?  
ΔH=   kJ mol−1
 
 
B:   Which of the following statements regarding the overall reaction   R → P  is/are incorrect?  Select all that apply.  
 



 


Three activated complexes are formed in this reaction

Step S→P  has a smaller rate constant than step P→S

Step Q→S is the rate-determining step

The step R→Q has the largest rate constant

ΔrH  is positive

Species S  is an intermediate

		Three activated complexes are formed in this reaction
		Step $S \to P$ has a smaller rate constant than step $P \to S$
		Step $Q \to S$ is the rate-determining step
		The step $R \to Q$ has the largest rate constant
		$Δ_{r} H$ is positive
		Species $S$ is an intermediate

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