DP Chemistry (last assessment 2024)

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Question 21M.2.sl.TZ1.d(iii)

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Date May 2021 Marks available [Maximum mark: 1] Reference code 21M.2.sl.TZ1.d(iii)
Level sl Paper 2 Time zone TZ1
Command term Suggest Question number d(iii) Adapted from N/A
d(iii).
[Maximum mark: 1]
21M.2.sl.TZ1.d(iii)

Iron may be extracted from iron (II) sulfide, FeS.

The first step in the extraction of iron from iron (II) sulfide is to roast it in air to form iron (III) oxide and sulfur dioxide.

Suggest why this process might raise environmental concerns.

[1]

Markscheme

sulfur dioxide/SO2 causes acid rain ✔

Accept sulfur dioxide/SO2/dust causes respiratory problems
Do not accept just “causes respiratory problems” or “causes acid rain”.

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