DP Chemistry (first assessment 2025)

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Question 22M.1A.HL.TZ1.30

Date	May 2022	Marks available	[Maximum mark: 1]	Reference code	22M.1A.HL.TZ1.30
Level	HL	Paper	1A	Time zone	TZ1
Command term	Predict	Question number	30	Adapted from	N/A

30.

[Maximum mark: 1]

22M.1A.HL.TZ1.30

What are the products when dilute aqueous copper (II) nitrate is electrolysed using platinum electrodes?

E^⦵ (Cu | Cu²⁺) = –0.34 V.

[1]

Markscheme

A

Examiners report

Average performance with a lower discrimination index and no clear misconception based on the incorrect choices.

Syllabus sections

Reactivity 3. What are the mechanisms of chemical change? » Reactivity 3.2—Electron transfer reactions » Reactivity 3.2.15—During electrolysis of aqueous solutions, competing reactions can occur at the anode and cathode, including the oxidation and reduction of water. Deduce from standard electrode potentials the products of the electrolysis of aqueous solutions.