Which statement best describes an endothermic reaction in terms of bond energies and…
CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics
Problem
Which statement best describes an endothermic reaction in terms of bond energies and the sign of the enthalpy change, ΔH?
(a) More energy is required to break reactant bonds than is released when product bonds form, and ΔH is negative.
(b) Equal amounts of energy are required to break reactant bonds and are released when product bonds form, and ΔH is positive.
(c) More energy is required to break reactant bonds than is released when product bonds form, and ΔH is positive.
(d) More energy is released when product bonds form than is required to break reactant bonds, and ΔH is positive.