Question

Name the catalyst used in contact process.

Answer 1

Catalyst used in contact process is vanadium pentoxide $\left(V_2{O}_5\right)$

process:

(i)Burning of sulphur sulphide in air to greater $S{O}_2$

(ii)Conversion of $S{O}_2$ to $S{O}_3$ by the reaction with oxygen in the presence of $V_2{O}_5$

(iii)Absorption of $S{O}_3$in $H_{2}S{O}_4$ to give oleum $\left(H_2{S}_2{O}_7\right)$