DP Chemistry (last assessment 2024)
Question 22M.2.hl.TZ1.2c(i)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.hl.TZ1.2c(i) |
| Level | hl | Paper | 2 | Time zone | TZ1 |
| Command term | Deduce | Question number | c(i) | Adapted from | N/A |
c(i).
[Maximum mark: 1]
22M.2.hl.TZ1.2c(i)
Magnesium is a reactive metal often found in alloys.
A graph of the volume of gas produced by reacting magnesium with a large excess of 1 mol dm–3 hydrochloric acid is shown.
(c(i))
Use the graph to deduce the dependence of the reaction rate on the amount of Mg.
[1]
Markscheme
independent / not dependent ✔
Accept “zero order in Mg”.
Examiners report
Candidates found this to be a tough question (see comments for parts (ii) and (iii)).
