DP Chemistry (last assessment 2024)

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Question 21N.1.sl.TZ0.20

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Date November 2021 Marks available [Maximum mark: 1] Reference code 21N.1.sl.TZ0.20
Level sl Paper 1 Time zone TZ0
Command term Apply Question number 20 Adapted from N/A
20.
[Maximum mark: 1]
21N.1.sl.TZ0.20

Which ions are present in an aqueous solution of Na2CO3?

I.   HCO3−
II.  OH−
III. CO32−


A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

D

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