Question

question 5 (1 point)
potential energy diagram

use the potential energy diagram. what is shown by the letter b?
the activation energy of the forward reaction
the activation energy of the reverse reaction
the transition state
the heat of reaction
the entropy of the reaction
question 6 (1 point)
which step of a reaction is the rate - determining step?

Explanation:

• Activation energy (forward or reverse) is the energy difference between reactants (or products) and the transition state. In the diagram, if we assume the left side is reactants, \(B\) is the energy difference between reactants and the peak (transition state), which is the activation energy of the forward reaction.
• The transition state is the peak itself, not the energy difference.
• The heat of reaction (\(\Delta H\)) is the energy difference between reactants and products ( \(C - A\) in the diagram if \(A\) is reactant energy and \(C\) is product energy).
• Entropy is not represented in a simple potential - energy vs reaction progress diagram.

Answer:

the activation energy of the forward reaction