CHEMISTRY · Single correct · A Level · Chemistry · Energetics · Energetics
Problem
When a chemical reaction is reported with ΔH∘=+92.4kJ, which statement best describes the thermochemical nature of the process?
(a) The reaction is spontaneous because ΔH∘ is positive.
(b) The reaction is endothermic because heat is absorbed from the surroundings.
(c) The reaction is exothermic because heat is released to the surroundings.
(d) The reaction is isothermal because the temperature remains constant.