Apply: factors affecting reaction rates

Temperature is a measure of the average kinetic energy of a system. The diagram below shows a single chemical reaction at two different temperatures,

T_{1}

and

T_{2}

. The relative number of molecular collisions is represented by the y-axis, and kinetic energy is on the x-axis. The activation energy

(E_{a})

is represented by a dashed line.

At which temperature would the reaction likely proceed at a higher rate, and why?

(Choice A)
$T_{1}$ ‍, because fewer molecules at this temperature collide with the required activation energy
(Choice B)
$T_{1}$ ‍, because the value of $E_{a}$ ‍ is lower at this temperature
(Choice C)
$T_{2}$ ‍, because more molecules at this temperature collide with the required activation energy
(Choice D)
$T_{2}$ ‍, because the value of $E_{a}$ ‍ is higher at this temperature

High school chemistry