In multistage equilibrium conversion of SO2 to SO3 (2SO2 + O2 ⇌ 2SO3), the reverse reaction becomes appreciable at a temperature of 550° C. The percentage equilibrium conversion of SO2 to SO3 can be increased by ?

Question

Accepted Answer

Removing some quantity of SO3 during intermediate stage. Removing SO3 shifts the equilibrium to the right (Le Chatelier's principle), increasing conversion. This is a key industrial practice.