DP Chemistry (last assessment 2024)

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Question 22N.1.hl.TZ0.31

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.hl.TZ0.31
Level hl Paper 1 Time zone TZ0
Command term State Question number 31 Adapted from N/A
31.
[Maximum mark: 1]
22N.1.hl.TZ0.31

Which factors affect the amount, in mol, of product formed during electrolysis?

I.   The charge on the ion
II.  The molar mass of the ion
III. The duration of the electrolysis

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

B

Examiners report

Nearly two-thirds of the candidates were able to identify which factors affect the amount of product formed during electrolysis. The quite large number of students opting for all three factors (D), shows that many thought the question referred to the mass of product, not the amount.