DP Chemistry (first assessment 2025)

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Question 23M.2.SL.TZ1.2a

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.SL.TZ1.2a
Level SL Paper 2 Time zone TZ1
Command term Deduce, Identify Question number a Adapted from N/A
a.
[Maximum mark: 2]
23M.2.SL.TZ1.2a
(a)

The results are given where ✓ = reaction occurred and x = no reaction.

Metal ASO4 (aq) BSO4 (aq) CSO4 (aq) DSO4 (aq) ESO4 (aq)
A — ✓ ✗ ✓ ✓
B ✗ — ✗ ✓ ✓
C ✓ ✓ — ✓ ✓
D ✗ ✗ ✗ — ✓
E ✗ ✗ ✗ ✗ —

(a.i)

Identify the oxidation state of metal A in ASO4.

[1]

Markscheme

+2/II ✓


Do not accept A2+, A+2, 2 OR 2+.

(a.ii)

Deduce the activity series of the metals.

[1]

Markscheme

C A B D E ✓


Do not accept reverse order unless the answer makes it clear which is the most reactive.