DP Chemistry (last assessment 2024)

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Question 20N.1.hl.TZ0.27

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1.hl.TZ0.27
Level hl Paper 1 Time zone TZ0
Command term Solve Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
20N.1.hl.TZ0.27

What is the pH of an ammonia solution that has [OH-]=1×10-4moldm-3?

A.  4.0

B.  8.0

C.  10.0

D.  12.0

[1]

Markscheme

C

Examiners report

More than 86% of candidates could find a pH from a given hydroxide concentration.