DP Chemistry (first assessment 2025)

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Question 21M.2.SL.TZ1.d(i)

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

d(i).

[Maximum mark: 1]

21M.2.SL.TZ1.d(i)

Write the equation for this reaction.

[1]

Markscheme

4FeS(s) + 7O₂(g) → 2Fe₂O₃(s) + 4SO₂(g) ✔

Accept any correct ratio.

Syllabus sections

Reactivity 2. How much, how fast and how far? » Reactivity 2.1—How much? The amount of chemical change » Reactivity 2.1.1—Chemical equations show the ratio of reactants and products in a reaction. Deduce chemical equations when reactants and products are specified.