Which of the following are favourable for the rate determing step for the ndustrial preparation of sulphuric acid (contact process)?
Excess of oxygen
Using a catalyst
A high pressure would have been favourable for the catalytic oxidation of SO2 but making towers which can withstand such high pressures is difficult. A high temperature is necessary for supplying the required activation energy. Excess oxygen is desirable as oxygen acts as a reactant in two steps. Lastly, a catalyst will be able to speed up the reaction.