DP Chemistry (first assessment 2025)
Question 21M.1A.SL.TZ1.17
Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.1A.SL.TZ1.17 |
Level | SL | Paper | 1A | Time zone | TZ1 |
Command term | Identify | Question number | 17 | Adapted from | N/A |
17.
[Maximum mark: 1]
21M.1A.SL.TZ1.17
On the following Maxwell-Boltzmann distribution, which letter represents activation energy?
A. A
B. B
C. C
D. D
[1]
Markscheme
B
Syllabus sections
Reactivity 2. How much, how fast and how far? » Reactivity 2.2—How fast? The rate of chemical change » Reactivity 2.2.4—Activation energy, Ea, is the minimum energy that colliding particles need for a successful collision leading to a reaction. Construct Maxwell–Boltzmann energy distribution curves to explain the effect of temperature on the probability of successful collisions.