DP Chemistry (last assessment 2024)

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Question 18M.3.sl.TZ1.c.ii

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.sl.TZ1.c.ii
Level sl Paper 3 Time zone TZ1
Command term State Question number c.ii Adapted from N/A
c.ii.
[Maximum mark: 1]
18M.3.sl.TZ1.c.ii

Both HDPE (high density polyethene) and LDPE (low density polyethene) are produced by the polymerization of ethene.

Trace amounts of metal from the catalysts used in the production of HDPE sometimes remain in the product. State a technique that could be used to measure the concentration of the metal.

[1]

Markscheme

inductively coupled plasma/ICP spectroscopy using mass spectroscopy/mass spectrometry/MS/ICP-MS

OR

inductively coupled plasma/ICP spectroscopy using optical emission spectroscopy/OES/ICP-OES

 

Accept “atomic absorption/aa spectroscopy” or “MS/massspectroscopy/mass spectrometry”.

[1 mark]

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