ICSE BoardEnglish MediumSTD 10ChemistrySulphuric Acid1 Mark
MCQ
The catalyst used in the contact process is:
A
Copper
B
Iron
C
Vanadium pentoxide
D
Manganese dioxide
✓
Answer
C. Vanadium pentoxide Explanation: The catalyst used in the Contact process for the production of sulphuric acid is vanadium pentoxide $\left( V _2 O _5\right)$. This catalyst helps facilitate the oxidation of sulphur dioxide $\left( SO _2\right)$ to sulphur trioxide $\left( SO _3\right)$ by lowering the temperature and increase the reaction rate in the contact process. It is generally made porous to increase its surface area. $2 SO _2+ O _2 \underset{450^{\circ} C }{\stackrel{ v _2 o _5}{\rightleftharpoons}} 2 SO _3$
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