DP Chemistry (last assessment 2024)

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Question 19N.2.sl.TZ0.5c(ii)

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.2.sl.TZ0.5c(ii)
Level sl Paper 2 Time zone TZ0
Command term Apply, Formulate Question number c(ii) Adapted from N/A
c(ii).
[Maximum mark: 1]
19N.2.sl.TZ0.5c(ii)

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

An electrolysis cell was assembled using graphite electrodes and connected as shown.

(c(ii))

Write the half-equation for the formation of gas bubbles at electrode 1.

[1]

Markscheme

2Cl− → Cl2 (g) + 2e−
OR
Cl− → 1 2 Cl2 (g) + e− ✔

NOTE: Accept e for e−.

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