DP Chemistry (last assessment 2024)

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Question 19N.2.hl.TZ0.c(iii)

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.2.hl.TZ0.c(iii)
Level hl Paper 2 Time zone TZ0
Command term Apply, Identify Question number c(iii) Adapted from N/A
c(iii).
[Maximum mark: 1]
19N.2.hl.TZ0.c(iii)

Copper forms two chlorides, copper(I) chloride and copper(II) chloride.

Two electrolysis cells were assembled using graphite electrodes and connected in series as shown.

 

Bubbles of gas were also observed at another electrode. Identify the electrode and the gas.

Electrode number (on diagram):

Name of gas: 

[1]

Markscheme

«electrode» 3 AND oxygen/O2 ✔

NOTE: Accept chlorine/Cl2.

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