Chemistry · May / June 2026 · Paper 22 · Question 2
5070
As printed in the paper
The question as text
Potassium superoxide, KO2, reacts with carbon dioxide to make potassium carbonate and oxygen. 4KO2(s) + 2CO2(g) 2K2CO3(s) + 3O2(g)
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Show the answer and mark scheme
2(a)[3]
2(b)[1]
2(c)[1]
2(d)[3]
2(e)[2]
2(f)[1]
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