DP Chemistry (first assessment 2025)

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Question 22M.1A.SL.TZ2.1

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ2.1
Level SL Paper 1A Time zone TZ2
Command term Solve Question number 1 Adapted from N/A
1.
[Maximum mark: 1]
22M.1A.SL.TZ2.1

What is the concentration of chloride ions, in mol dm−3, in a solution formed by mixing 200 cm3 of 1 mol dm−3 HCl with 200 cm3 of 5 mol dm−3 NaCl?

A.  1

B.  2

C.  3

D.  6

[1]

Markscheme

C

Examiners report

52% of the candidates calculated the concentration of chloride ions in the titration. The distractors were chosen almost equally.

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