Iron and sulfur react together to form iron(II) sulfide. The equation for the reaction is: Fe (s) 1 S (s) FeS (s)
28 g of iron will react with 16 g of sulfur. Use this information to answer the questions below.
a When 28 g of iron reacts with 16 g of sulfur, how many grams of iron(II) sulfide form?
[1]
b What mass of iron will react with 4 g of sulfur, to form iron(II) sulfide? [1]
c A mixture of iron and sulfur reacts completely, giving 88 g of iron(II) sulfide. What masses
of iron and sulfur did the mixture contain? [2]
d 14 g of iron was mixed with 10 g of sulfur, and the mixture was heated to start the reaction.
i Which reactant was in excess?
ii What mass of iron(II) sulfide formed?