contact process Flashcards
1
Q
step 1
A
sulphur is reacted with oxygen to form sulphur dioxide
S + O —–> SO2
2
Q
step 2
A
the sulphur dioxide is reacted with more oxygen to form sulphur trioxide
SO2 + O2 —–> S03
3
Q
step 3
A
the sulphur trioxide is absorbed in concentrated sulphuric acid to form oleum
H2SO4 + SO3 —-. H2S207
4
Q
STEP 4
A
the oleum is diluted with (the suitable amount) of water to form concentrated sulfuric acid
H222O7 + H2O —–> 2H2SO4
5
Q
uses of sulfuric acid
A
fertilizers
cleaning products
6
Q
uses of sulfur dioxide
A
preserve food sterilising making wine refrigerant fumigants bleach for wood pulp
