–(b) What other raw material needs to be added to the
blast furnace? Put a ring around the correct answer.
•cement limewater limestone slag [1]
–(c)
Near the bottom of the furnace, iron(III) oxide is reduced by carbon.
– Fe2O3 + 3C ® 2Fe + 3CO
•(i)
Write a word equation for this reaction. [1]
•
•
•(ii)
Explain what is meant by the term reduction. [1]
–
–
–(d)
The table (on the next slide) shows the composition of the waste gases leaving
the blast furnace.