As shown in Table 15.2 in the textbook, KpKp for the equilibrium N2(g)+3H2(g)⇌2NH3(g)N2(g)+3H2(g)⇌2NH3(g) is 4.51×10−54.51×10−5 at 450 ∘C∘C. For each of the mixtures listed here, indicate whether the mixture is at equilibrium at 450 ∘C∘C. If it is not at equilibrium, indicate the direction (toward product or toward reactants) in which the mixture must shift to achieve equilibrium.   13 atmatm NH3NH3, 27 atmatm N2N2, 82 atmatm H2H2 13  , 27  , 82   a. yes, mixture is at equilibrium b. no, mixture must shift toward products to achieve equilibrium c. no, mixture must shift toward reactants to achieve equilibrium

The equilibrium constant for the reaction 2 HF (g) ⇌ H₂ (g) + F₂ (g) is 0.300 at a particular temperature. What is the equilibrium constant for the equation ½ H₂ (g) + ½ F₂ (g) ⇌ HF (g)?

The reaction systemC(s) + 2S(g) ⇌ CS2(g)is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of carbon disulfide is reduced? As equilibrium is reestablished, the partial pressure of carbon (C) increases. As equilibrium is reestablished, the partial pressure of carbon (C) decreases. As equilibrium is reestablished, the partial pressure of carbon disulfide (CS2) increases. As equilibrium is reestablished, the partial pressure of carbon disulfide (CS2) decreases. As equilibrium is reestablished, all the partial pressures will increase

For the reaction N2(g)+3H2(g)⇌2NH3(g)N2(g)+3H2(g)⇌2NH3(g) KpKpK_p = 4.25×10−3 at 334 ∘C∘C . What is KcKc for the reaction at this temperature? Enter your answer numerically.

Hydrogen chloride and oxygen react to form water and chlorine, like this: 4HCl(g) + O2(g) →>> 2H2O(g)+2Cl2(g) Suppose a mixture of HCl, O2, H2O and Cl2 has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation change in composition shift in equilibrium to the right The pressure of HCl will ? Some Cl₂ is added. to the left The pressure of O₂ will ? ○ (none) to the right The pressure of O2 will ? Some HCl is removed. to the left The pressure of H2O will ? O (none)

As shown in Table 15.2 in the textbook, KpKp for the equilibriumN2(g)+3H2(g)⇌2NH3(g)N2(g)+3H2(g)⇌2NH3(g)is 4.51×10−54.51×10−5 at 450 ∘C∘C. For each of the mixtures listed here, indicate whether the mixture is at equilibrium at 450 ∘C∘C. If it is not at equilibrium, indicate the direction (toward product or toward reactants) in which the mixture must shift to achieve equilibrium. A. 98 atmatm NH3NH3, 45 atmatm N2N2, 55 atmatm H2H2 98  , 45  , 55   a. yes, mixture is at equilibrium b. no, mixture must shift toward products to achieve equilibrium c. no, mixture must shift toward reactants to achieve equilibrium B.57 atmatm NH3NH3, 143 atmatm N2N2, no H2H2 57  , 143  , no  a.yes, mixture is at equilibrium b.no, mixture must shift toward products to achieve equilibrium c.no, mixture must shift toward reactants to achieve equilibrium

Carbon disulfide and oxygen react to form carbon dioxide and sulfur dioxide, like this: CS₂(g) +30₂(g) CO₂(g) +2SO₂(g) Suppose a mixture of CS2, O2, CO2 and SO₂ has come to equilibrium in a closed reaction vessel. Predict what change, if any, the perturbations in the table below will cause in the composition of the mixture in the vessel. Also decide whether the equilibrium shifts to the right or left. perturbation Some O₂ is added. - Some CO₂ is removed. change in composition The pressure of CS₂ will The pressure of CO₂ will The pressure of CS₂ will The pressure of O₂ will ? ? ? ? ↑ ↑ ↑ ↑ shift in equilibrium X O OOO to the right to the left (none) to the right to the left O (none)

3 Problem 3: A gas that has a volume of 34 L, a temperature of 318 K and an unknown pressure, has its volume increased to 40 L and its temperature decreased to 308 K. The pressure after the change is 2 atm. What is the original pressure of the gas?

The following reactions have the indicated equilibrium constants at a particular temperature:  N2 (g) + O2(g) ⇌ 2NO (g) Kc = 7.1 ×10−25 2NO (g) + O2 (g) ⇌ 2NO2(g) Kc = 6.4 × 109 Determine the value of the equilibrium constant for the following equation at the same temperature:  2NO(g) ⇌ N2(g) + O2(g)