The Contact process is employed in the production of sulfuric acid. The equation for the main reaction is shown below. $2\text{SO}_2\text{(g)} + \text{O}_2\text{(g)} \rightleftharpoons 2\text{SO}_3\text{(g)} \qquad \Delta H = -196\,\text{kJ mol}^{-1}$ Which statement concerning this reaction is not correct?
- AIncreased pressure gives a higher yield of $\text{SO}_3$.
- BIncreased temperature gives a higher yield of $\text{SO}_3$.
- CIn the forward reaction the oxidation state of sulfur changes from $+4$ to $+6$.
- DVanadium(V) oxide is used as a catalyst.