(a(i))[1]
Balance the symbol equation for this reaction. 4$FeS_2$ + .... $O_2$ → .... $SO_2$ + .... $Fe_2O_3$
(a(ii))[2]
Complete Fig. 4.1 with a dot-and-cross diagram to represent the electronic configuration of an oxygen molecule, $O_2$. Show only the outer-shell electrons.
(b(i))[3]
State three usual conditions for the reaction between sulfur dioxide and oxygen in stage 2.
(b(ii))[1]
Write a symbol equation for the stage 2 reaction.
(b(iii))[1]
Write the symbol equation for the stage 3 reaction.
(c)[2]
Give the oxidation number of carbon in C and $CO_2$.
(d)[3]
Calculate the volume of $CO_2(g)$, measured at r.t.p., that is produced by following these steps.