DP Chemistry (last assessment 2024)

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Question 19M.2.hl.TZ1.2g

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.hl.TZ1.2g
Level hl Paper 2 Time zone TZ1
Command term Identify Question number g Adapted from N/A
g.
[Maximum mark: 1]
19M.2.hl.TZ1.2g

Benzoic acid, C6H5COOH, is another derivative of benzene.

(g)

The combustion reaction in (f)(ii) can also be classed as redox. Identify the atom that is oxidized and the atom that is reduced.

[1]

Markscheme

Oxidized:

C/carbon «in C6H5COOH»

AND

Reduced:

O/oxygen «in O2»      [✔]

Examiners report

Another question where not reading correctly was a concern. Instead of identifying the atom that is oxidized and the atom that is reduced, answers included formulas of molecules or the atoms were reversed for the redox processes.

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