The reaction equation for the Contact process is given below. $2\text{SO}_2(g) + \text{O}_2(g) \rightleftharpoons 2\text{SO}_3(g) \qquad \Delta H = -197\,\text{kJ mol}^{-1}$ The reaction is carried out at $450^\circ\text{C}$, $2$ atmospheres pressure and in the presence of a catalyst. What happens if the temperature is lowered to $250^\circ\text{C}$ and the catalyst is taken away?
- Apercentage of $\text{SO}_3$ decreases | rate of forward reaction: no change
- Bpercentage of $\text{SO}_3$ decreases | rate of forward reaction: decrease
- Cpercentage of $\text{SO}_3$ increases | rate of forward reaction: increase
- Dpercentage of $\text{SO}_3$ increases | rate of forward reaction: decrease