DP Chemistry (last assessment 2024)

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Question 19M.1.hl.TZ2.24

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.hl.TZ2.24
Level hl Paper 1 Time zone TZ2
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
19M.1.hl.TZ2.24

What is the pH of 0.001 mol dm−3 NaOH (aq)?

A. 1

B. 3

C. 11

D. 13

[1]

Markscheme

C

Examiners report

77 % of the candidates were able to calculate the pH of the aqueous solution of NaOH. The most commonly chosen distractor was D (pH = 13) which was probably selected because NaOH is a strong base.

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