Question

1. Some PCl5 is pumped into a 500 mL flask. The [PCl3] = 1.50 M at equilibrium. What was the initial [PCl5]? PCl5(g) ⇌ PCl3(g) + Cl2(g) Keq = 2.14 2. A reaction mixture contains 0.24 mol of NO, 0.10 mol of O2, and 1.20 mol of NO2 at equilibrium in a 1.0 L container. How many moles of O2 would need to be added to the mixture to increase the amount of NO2 to 1.30 mol when equilibrium is reestablished? 2 NO(g) + O2(g) ⇌ 2 NO2(g) 3. At 500. °C, the reaction between N2 and H2 to form ammonia has a Kp = 1.5 x 10-5. What is the numerical value of Kc for this reaction?

          1. Some PCl5 is pumped into a 500 mL flask. The [PCl3] = 1.50 M at equilibrium. What was the initial [PCl5]?
PCl5(g) ⇌ PCl3(g) + Cl2(g) Keq = 2.14
2. A reaction mixture contains 0.24 mol of NO, 0.10 mol of O2, and 1.20 mol of NO2 at equilibrium in a 1.0 L container. How many moles of O2 would need to be added to the mixture to increase the amount of NO2 to 1.30 mol when equilibrium is reestablished?
2 NO(g) + O2(g) ⇌ 2 NO2(g)
3. At 500. °C, the reaction between N2 and H2 to form ammonia has a Kp = 1.5 x 10-5. What is the numerical value of Kc for this reaction?

Added by Guillermo E.

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