DP Chemistry (last assessment 2024)

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Question 17N.3.hl.TZ0.9a

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.3.hl.TZ0.9a
Level hl Paper 3 Time zone TZ0
Command term State Question number a Adapted from N/A
a.
[Maximum mark: 1]
17N.3.hl.TZ0.9a

Heavy metal ions are an important environmental concern.

(a)

State the name of one method, other than precipitation, of removing heavy metal ions from solution in water.

[1]

Markscheme

adsorption

OR

chelation

OR

ion exchange

Accept other valid methods such as “phytoremediation” OR “Fenton reaction” OR “electrolysis”.

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