DP Chemistry (last assessment 2024)

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Question 22N.1.sl.TZ0.3

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Date November 2022 Marks available [Maximum mark: 1] Reference code 22N.1.sl.TZ0.3
Level sl Paper 1 Time zone TZ0
Command term Solve Question number 3 Adapted from N/A
3.
[Maximum mark: 1]
22N.1.sl.TZ0.3

How many moles of carbon dioxide are produced by the complete combustion of 7.0 g of ethene, C2H4 (g)?

Mr = 28


A.  0.25

B.  0.5

C.  0.75

D.  1.0

[1]

Markscheme

B

Examiners report

54% of the candidates deduced the number of CO2 moles produced from 7g of C2H4. The most commonly chosen distractor was A which ignored the stoichiometric ratio.

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