Question

Which of the following conclusions can be drawn from the curves in the

energy diagram?
OA. The reaction represented by curve B will go faster than the curve A
reaction.
OB. The molecules represented in curve A have higher kinetic energy
than curve B.
C. The reaction represented by curve B has a larger equilibrium
constant than curve A.
OD. The reaction represented by curve A requires less added energy
than curve B.
SUBMIT

Answer 1

The correct conclusion that can be drawn from the curves in the energy diagram is:

OD. The reaction represented by curve A requires less added energy than curve B.

Curve A represents an exothermic reaction because the products have less energy than the reactants, and curve B represents an endothermic reaction because the products have more energy than the reactants. The difference in energy between the reactants and products in curve A is less than the difference in energy between the reactants and products in curve B, which means that less energy is required to reach the transition state in curve A than in curve B. Therefore, curve A requires less added energy than curve B.

Option A is incorrect because the speed of a reaction is not determined by the shape of the energy diagram.

Option B is incorrect because the shape of the curves does not provide information about the kinetic energy of the molecules.

Option C is incorrect because the size of the equilibrium constant is not determined by the shape of the energy diagram.