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1. Initially, a 1.0-liter of container contains 2.00moles of NO and 1.00moles of O2. At equilibrium, 0.750moles of NO have reacted. What are the equilibrium concentrations of all the species and K (include units)? The reversible reaction is 2 NO(g) + 1 O2 (g) <==> 2 NO2 (g)
2. For reaction 2 SO2(g) + O2(g) <--> 2 SO3(g)
a 1.00-L container initially has 2.00 moles of SO3. If 1.25moles of SO3 remain at equilibrium, what are the equilibrium concentrations of all species and then calculated K (equilibrium constant). Include units of K?
3. The reaction PCl5(g) <---> PCl3(g) + Cl2(g) occurs in a 1.0-liter container. Initially, the container holds 3.25moles of PCl3 and 6.40moles of Cl2. At equilibrium, 1.45moles of PCl3 reacted. What is the equilibrium concentration of all species and the equilibrium constant (K)?
Answer:
1. [NO]E = 1.25M, [O2]E = 0.625M, [NO2]E = 0.750M, K=0.576M-1
2. [SO3]E = 1.25M, [SO2]E = 0.750M, [O2]E = 0.375M, K=7.41M-1
3. [PCl3]E = 1.80M, [Cl2]E = 4.95M, [PCl5]E = 1.45M, K=6.14M