Question

Give the answer in one word.

Catalyst used for conversion of sulphur dioxide to sulphur trioxide.

Answer 1

• Catalyst definition: Catalysts are compounds that increase the rate of a chemical reaction.
• Oxidation reaction definition: The reaction where oxygen is treated as one of the reactants or in other words the compound is reactant with Oxygen is termed an oxidation reaction.
• The compound Sulphur dioxide (${\mathbf{SO}}_{\mathbf{2}}$) is converted to Sulphur trioxide (${\mathbf{SO}}_{\mathbf{3}}$) by catalytic oxidation of Sulphur dioxide (${\mathbf{SO}}_{\mathbf{2}}$).
• Sulphur dioxide (${\mathbf{SO}}_{\mathbf{2}}$) undergoes oxidation in presence of Vanadium pentaoxide (${\mathbf{V}}_{\mathbf{2}}{\mathbf{O}}_{\mathbf{5}}$) to form Sulphur trioxide (${\mathbf{SO}}_{\mathbf{3}}$).
• The reaction is shown below.
  $$\begin{gathered} 2{\mathrm{SO}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\stackrel{{\mathrm{V}}_2{\mathrm{O}}_5}{\rightleftarrows }2{\mathrm{SO}}_3\left(\mathrm{g}\right)+∆ \\ \mathrm{Sulphur}\mathrm{Oxygen}\mathrm{Sulphur} \\ \mathrm{dioxide}\mathrm{trioxide} \end{gathered}$$
• Therefore, the catalyst used for the conversion of sulphur dioxide to sulphur trioxide is Vanadium pentaoxide.