Question

State the conditions required for the following reactions to take place:

The conversion of sulphur dioxide to sulphur trioxide.

Answer 1

1. The reaction is exothermic, so reactions are favoured at low temperatures.
2. High pressure favours the reaction because the product it forms has a smaller volume than the reactant.
3. There was an excess of oxygen in the air.
4. A suitable catalyst, such as platinum, is required.