the graph plots free energy over the course o...
the graph plots free energy over the course of a reaction.\nwhat is shown by the arrow labeled \activation energy\?\na. the energy released by the reaction\nb. the energy absorbed by the reaction\nc. the input of energy needed for the reaction to begin\nd. the sum of the energies of the reactants and products
Answer
# Brief Explanations:
Activation energy is the minimum energy that reactants must possess for a chemical reaction to occur. It is the energy input required to start the reaction, as shown in the graph. Option A refers to the difference in energy between reactants and products (energy change of the reaction), not activation energy. Option B is incorrect as activation energy is not about absorption in that context. Option D is not related to activation energy's definition.
# Answer:
C. the input of energy needed for the reaction to begin