DP Chemistry (first assessment 2025)
Question 19N.1A.SL.TZ0.23
| Date | November 2019 | Marks available | [Maximum mark: 1] | Reference code | 19N.1A.SL.TZ0.23 |
| Level | SL | Paper | 1A | Time zone | TZ0 |
| Command term | Deduce, List | Question number | 23 | Adapted from | N/A |
23.
[Maximum mark: 1]
19N.1A.SL.TZ0.23
The following occurs when metal X is added to Y sulfate solution and Z sulfate solution. (X, Y and Z represent metal elements but not their symbols.)
X (s) + YSO4 (aq) → XSO4 (aq) + Y (s)
X (s) + ZSO4 (aq): no reaction
What is the order of increasing reactivity?
A. X < Y < Z
B. Y < X < Z
C. Z < Y < X
D. Z < X < Y
[1]
Markscheme
B
Syllabus sections
Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.3—The relative ease of oxidation and reduction of an element in a group can be predicted from its position in the periodic table. The reactions between metals and aqueous metal ions demonstrate the relative ease of oxidation of different metals. Predict the relative ease of oxidation of metals. Predict the relative ease of reduction of halogens. Interpret data regarding metal and metal ion reactions.