A reaction with shows no detectable product after 1 hour at 298 K
CHEMISTRY · Single correct · AP · Chemistry · Kinetics · Kinetics
Problem
A reaction with ΔG∘=−45kJ mol−1 shows no detectable product after 1 hour at 298 K. Which of the following best explains why heating the mixture to 350 K results in measurable product formation?
(a) Raising the temperature lowers the activation energy by supplying thermal energy to the reactants.
(b) Raising the temperature shifts the equilibrium constant strongly toward products, so the reaction proceeds rapidly.
(c) Raising the temperature increases the fraction of molecules with energy ≥Ea, which increases the rate constant appreciably.
(d) Raising the temperature decreases ΔG∘, making the reaction spontaneous at the higher temperature.