DP Chemistry (last assessment 2024)

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Question 23M.2.HL.TZ1.9a

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Date May 2023 Marks available [Maximum mark: 2] Reference code 23M.2.HL.TZ1.9a
Level HL Paper 2 Time zone TZ1
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 2]
23M.2.HL.TZ1.9a
(a)

Explain why a colorimeter set at a wavelength of 500 nm is not suitable to investigate reactions of Zn2+ compounds. Use section 3 of the data booklet.

[2]

Markscheme

Zn2+ does not form coloured compounds/ has a complete d subshell/orbital  ✓

500 nm/«the setting on the colorimeter» in visible region AND no absorbance will be seen  ✓

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