DP Chemistry (last assessment 2024)

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Question 22M.1.hl.TZ2.11

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1.hl.TZ2.11
Level hl Paper 1 Time zone TZ2
Command term Deduce Question number 11 Adapted from N/A
11.
[Maximum mark: 1]
22M.1.hl.TZ2.11

What is the formal charge of the oxygen atom in H3O+?

A.  −2

B.  −1

C.  0

D.  +1

[1]

Markscheme

D

Examiners report

44% of candidates were able to determine the formal charge of the oxygen atom in H3O+. The most commonly chosen distractor was -2 (the oxidation state of the oxygen).

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