The Contact Process (C5)

Stage 1 - making sulfur dioxide:

Sulfur is burned in the air to make sulfur dioxide

Sulfur + oxygen ----> Sulfur dioxide

S(I)    + O2(g)   ----> SO2(g)

This IS NOT a reversible reaction

Stage 2 - making sulfur trioxide:

SUlfur dioxide reacts with more oxygen tomake sulfur trioxide

Sulfur dioxide + oxygen ----> Sulfur…