1.Given the following reaction: 2 NO(g) + O2(g) <--> 2 NO2(g), what is the equilibrium constant (K), if the concentrations at equilibrium are [NO] = 0.0542 M, [O2] = 0.127 M, and [NO2] = 15.5 M?
K = 2.54 x 10-1
K = 6.44 x 105
K = 2.35 x 102
K = 3.4 x 103
2.The following reaction: HF(aq) <--> H+(aq) + F-(aq) has an equilbirum constant (K) value of 7.2 x 10-4. This means that the reaction proceeds essentially to completion.
3.Carbonyl chloride, also called phosgene, was used in World War 1 as a poisonous gas. The equilibrium concentrations for the reaction between carbon dioxide and molecular chlorine to form carbonyl chloride
CO(g) + Cl2(g) <--> CoCl2(g)
are [CO] = 1.2 x 10-2 M, [Cl2] = 0.054 M, and [CoCl2] = 0.14 M. Calculate the equilibrium constant (K).
K = 6.23 x 102
K = 216
K = 4.63 x 10-3
K = 2.56
4.The equilibrium constant for the following equation:
PCl5(g) <--> PCl3(g) + Cl2(g) is 1.05 at 250 degrees Celsius. If the equilibrium partial pressures of PCl5 and PCl3 are 0.875 atm and 0.463 atm respectively, what is the equilibrium partial pressure of Cl2?
Given the reaction
2 HI(g) <--> H2(g) + I2(g)
At 430 degrees Celsius, the equilibrium concentrations are [HI] = .5M, [H2] = 0.5 M, and [I2] = 1.5 M. What is the equilibrium constant (K)?
K = 0.67
K = 1.5
K = 0.33
K = 3
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