(a(i))[2]
Write the chemical equation for this reaction.
(a(ii))[2]
What type of oxide is sulfur dioxide? Give a reason to justify your answer.
(b(i))[1]
On the diagram, draw an arrow to show where the apparatus is heated.
(b(ii))[1]
What does the term sublimation mean?
(b(iii))[2]
Suggest why the iron(III) chloride is collected in the flask rather than in the ceramic boat.
(b(iv))[1]
Explain why this counts as a decomposition reaction.
(c)[2]
Name two additional substances that react with iron.
(d)[2]
Describe how to test for iron(II) ions. test results