The Contact process involves the reversible oxidation of sulfur dioxide to form sulfur trioxide:
2SO2(g)+O2(g)⇌2SO3(g) 2\text{SO}_2(\text{g}) + \text{O}_2(\text{g}) \rightleftharpoons 2\text{SO}_3(\text{g}) 2SO2(g)+O2(g)⇌2SO3(g)In an equilibrium mixture at a constant temperature, the partial pressure of SO2(g)\text{SO}_2(\text{g})SO2(g) is 30 kPa and the partial pressure of O2(g)\text{O}_2(\text{g})O2(g) is 40 kPa. The total pressure of the system at equilibrium is 130 kPa.
What is the value of KpK_{\text{p}}Kp, in kPa−1\text{kPa}^{-1}kPa−1?
0.0500.0500.050
0.0750.0750.075
0.100.100.10
101010
