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General Chemistry 2: Chemical Equilibrium

At 1000 K, 0.250 mol SO2_2 and 0.200 mol O2_2 react in a 10.0 L reaction vessel to form 0.162 mol of SO3_3 at equilibrium. What is Keq_{eq} at 1000 K for the reaction?

2 SO2_2 (g) + O2_2 (g) \leftrightharpoons 2 SO3_3 (g)

0.800 moles of N2_2 (g) are placed in a 7.00 L flask with 3.00 moles of H2_2 and allowed to react for some time. After several hours the concentrations of H2_2 (g) is measured at 0.278 M. What is the equilibrium constant for the reaction at this temperature?

N2_2 (g) + 3 H2_2 (g) \leftrightharpoons 2 NH3_3 (g)