DP Chemistry (first assessment 2025)

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Question SPM.1A.SL.TZ0.25

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Date May Specimen-2023 Marks available [Maximum mark: 1] Reference code SPM.1A.SL.TZ0.25
Level SL Paper 1A Time zone TZ0
Command term Question number 25 Adapted from N/A
25.
[Maximum mark: 1]
SPM.1A.SL.TZ0.25

Which reactions involve the transfer of a proton?


I.  2HCl (aq) + Mg (s) → MgCl2 (aq) + H2 (g)
II.  2HCl (aq) + MgO (s) → MgCl2 (aq) + H2O (l)
III.  2HCl (aq) + MgCO3 (s) → MgCl2 (aq) + H2O (l) + CO2 (g)


A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

C