3. The reaction 2 SO2(g) + O2(g) <--> 2 SO3(g) is performed in a 0.50-L container. At equilibrium, 2.00 moles of SO3, 1.75moles of O2 and 3.25moles of SO2 are located in the container . What is the equilibrium constant (K)? (also include the units of K).
4. The reaction PCl5(g) <---> PCl3(g) + Cl2(g). At equilibrium, a 1.0-L gas vessel has 1.25moles of PCl3, 0.755moles of Cl2 and 2.45moles of PCl5. What is the equilibrium constant?
Answer:
1. K = 0.786 , no units
2. [S2]E = 5.18E-2 M
3. K = 0.108 M-1
4. K = 0.385 M