Question

Given the Arrhenius equation, ln k = -Ea /RT + ln A, which of the following corresponds to faster reaction rates?

A) Reactions with higher activation energies
B) Reactions with lower activation energies
C) Reactions run at higher temperatures
D) Reactions run at lower temperatures
E) Reactions with lower activation energies and run at higher temperatures

Answer 1

B) Reactions with lower activation energies Faster reaction rates correspond to reactions with lower activation energies and those conducted at higher temperatures, according to the Arrhenius equation.

Step-by-step explanation:

According to the Arrhenius equation, which states ln k = -Ea /RT + ln A, faster reaction rates are achieved by reactions with lower activation energies (Ea) and reactions run at higher temperatures (T). This is because a lower Ea means that less energy is required for the reaction to occur, and higher temperatures increase the kinetic energy of the molecules, which makes them move faster and collide more often.

Therefore, the answer that best corresponds to faster reaction rates is reactions with lower activation energies and run at higher temperatures.