DP Chemistry (last assessment 2024)

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Question 22M.1.sl.TZ2.2

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1.sl.TZ2.2
Level sl Paper 1 Time zone TZ2
Command term Determine Question number 2 Adapted from N/A
2.
[Maximum mark: 1]
22M.1.sl.TZ2.2

30 g of an organic compound produces 44 g CO2 and 18 g H2O as the only combustion products. Which of the following is the empirical formula for this compound?

Mr CO2 = 44 Mr H2O = 18

A.  CH2

B.  CH3

C.  CHO

D.  CH2O

[1]

Markscheme

D

Examiners report

63% of the candidates determined the empirical formula of the organic compound correctly using the masses of the sample and the combustion products.

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