Question

Name the catalyst used to convert sulphur dioxide to sulphur trioxide

• A. Vanadium pentaoxide
• B. Molybdenum
• C. Ammonia
• D. Ozone

Answer 1

The correct option is A

Vanadium pentaoxide

The explanation for the correct option. (A):

Conversion of sulphur dioxide to sulphur trioxide:

• The catalyst used to convert sulphur dioxide to sulphur trioxide is either Vanadium pentaoxide or platinum.
• The conversion reaction is as follows:

$\underset{\mathrm{Sulphor}\mathrm{dioxide}}{2{\mathrm{SO}}_2\left(\mathrm{g}\right)}+\underset{\mathrm{Oxygen}}{{\mathrm{O}}_2\left(\mathrm{g}\right)}\stackrel{\mathrm{Vanadium}\mathrm{pentaoxide}/\mathrm{Pt}}{\to }\underset{\mathrm{Sulphur}\mathrm{trioxide}}{2{\mathrm{SO}}_3\left(\mathrm{g}\right)}$

Thus, among the given options (A) Vanadium pentaoxide is the correct answer.