(a)[1]
Name one source of sulfur.
(b)[5]
Describe step 2, including the reaction conditions and a chemical equation. There is no need to mention rate or yield.
(c)[1]
Finish the equation for this reaction. $\text{H}_2\text{SO}_4 + \text{SO}_3 \rightarrow ............$
(d(i))[2]
Give three observations the student is expected to make.
(d(ii))[1]
Give the names of every product formed.
(e(i))[1]
Name the black substance formed.
(e(ii))[1]
State the type of reaction that has occurred.