DP Chemistry (last assessment 2024)

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Question 20N.2.hl.TZ0.6c

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.2.hl.TZ0.6c
Level hl Paper 2 Time zone TZ0
Command term State Question number c Adapted from N/A
c.
[Maximum mark: 1]
20N.2.hl.TZ0.6c
(c)

The electron configuration of copper makes it a useful metal.

Copper plating can be used to improve the conductivity of an object.

State, giving your reason, at which electrode the object being electroplated should be placed.

[1]

Markscheme

cathode/negative «electrode» AND Cu2+ reduced «at that electrode» ✔

Accept cathode/negative «electrode» AND copper forms «at that electrode».

Examiners report

Surprisingly not that well answered. Most students identified the cathode as the electrode where electroplating occurs but few could adequately justify why.

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