DP Chemistry (first assessment 2025)

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Question 20N.1A.SL.TZ0.22

Date	November 2020	Marks available	[Maximum mark: 1]	Reference code	20N.1A.SL.TZ0.22
Level	SL	Paper	1A	Time zone	TZ0
Command term	Apply	Question number	22	Adapted from	N/A

22.

[Maximum mark: 1]

20N.1A.SL.TZ0.22

What is correct in an electrolytic cell?

[1]

Markscheme

D

Examiners report

A good majority of candidates understood that electrons are gained at the negative cathode causing reduction during electrolysis.

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.5—Oxidation occurs at the anode and reduction occurs at the cathode in electrochemical cells. Identify electrodes as anode and cathode, and identify their signs/polarities in voltaic cells and electrolytic cells, based on the type of reaction occurring at the electrode.