Exam 15: Chemical Equilibrium

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The equilibrium constant is given for two of the reactions below.Determine the value of the missing equilibrium constant. 2 A(g)+ B(g)⇌ A2B(g)Kc = ? A2B(g)+ B(g)⇌ A2B2(g)Kc = 16.4 2 A(g)+ 2 B(g)⇌ A2B2(g)Kc = 28.2

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What is Δn for the following equation in relating Kc to Kp? C3H8(g)+ 5 O2(g)⇌ 3 CO2(g)+ 4 H2O(l)

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Calculate the value of [N2]eq if [H2]eq = 2.0 M,[NH3]eq = 0.5 M,and Kc = 2. N2(g)+ 3 H2(g)⇌ 2 NH3(g)

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Consider the following reaction and its equilibrium constant: SO2(g)+ NO2(g)⇌ SO3(g)+ NO(g)Kc = 0.33 A reaction mixture contains 0.41 M SO2,0.13 M NO2, 0.11 M SO3 and 0.13 M NO.Which of the following statements is TRUE concerning this system?

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The Kp for the reaction below is 1.49 × 108 at 100.0°C: CO(g)+ The K<sub>p</sub> for the reaction below is 1.49 × 10<sup>8</sup> at 100.0°C: CO(g)+   (g)⇌   (g) In an equilibrium mixture of the three gases,   =   = 2.22 × 10<sup>-4</sup> atm.The partial pressure of the product,phosgene (   ),is ________ atm. (g)⇌ The K<sub>p</sub> for the reaction below is 1.49 × 10<sup>8</sup> at 100.0°C: CO(g)+   (g)⇌   (g) In an equilibrium mixture of the three gases,   =   = 2.22 × 10<sup>-4</sup> atm.The partial pressure of the product,phosgene (   ),is ________ atm. (g) In an equilibrium mixture of the three gases, The K<sub>p</sub> for the reaction below is 1.49 × 10<sup>8</sup> at 100.0°C: CO(g)+   (g)⇌   (g) In an equilibrium mixture of the three gases,   =   = 2.22 × 10<sup>-4</sup> atm.The partial pressure of the product,phosgene (   ),is ________ atm. = The K<sub>p</sub> for the reaction below is 1.49 × 10<sup>8</sup> at 100.0°C: CO(g)+   (g)⇌   (g) In an equilibrium mixture of the three gases,   =   = 2.22 × 10<sup>-4</sup> atm.The partial pressure of the product,phosgene (   ),is ________ atm. = 2.22 × 10-4 atm.The partial pressure of the product,phosgene ( The K<sub>p</sub> for the reaction below is 1.49 × 10<sup>8</sup> at 100.0°C: CO(g)+   (g)⇌   (g) In an equilibrium mixture of the three gases,   =   = 2.22 × 10<sup>-4</sup> atm.The partial pressure of the product,phosgene (   ),is ________ atm. ),is ________ atm.

(Multiple Choice)
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Consider the following reaction at equilibrium.What effect will adding more H2S have on the system? 2 H2S(g)+ 3 O2(g)⇌ 2 H2O(g)+ 2 SO2(g)

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Consider the following reaction: NO(g)+ SO3(g)⇌ NO2(g)+ SO2(g) A reaction mixture initially contains 0.86 atm NO and 0.86 atm SO3.Determine the equilibrium pressure of NO2 if Kp for the reaction at this temperature is 0.0118.

(Multiple Choice)
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In which of the following reactions will Kc = Kp?

(Multiple Choice)
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At a certain temperature the equilibrium constant,Kc,equals 0.11 for the reaction: 2 ICl(g)⇌ I2(g)+ Cl2(g). What is the equilibrium concentration of ICl if 0.45 mol of I2 and 0.45 mol of Cl2 are initially mixed in a 2.0-L flask?

(Multiple Choice)
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Express the equilibrium constant for the following reaction. 8 H2(g)+ 8 Br2(g)⇌ 16 HBr(g)

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The reaction below has a Kc value of 1.0 × 1012.What is the value of Kp for this reaction at 200 K? 2 SO2(g)+ O2(g)⇌ 2 SO3(g)

(Multiple Choice)
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Give the direction of the reaction,if K ≈ 1.

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Consider the following reaction at equilibrium.What will happen if Fe2O3 is added to the reaction? 4 FeS2(s)+ 11 O2(g)⇌ 2 Fe2O3(s)+ 8 SO2(g)

(Multiple Choice)
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What is Δn for the following equation in relating Kc to Kp? 2 NCl3(g)⇌ N2(g)+ 3 Cl2(g)

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Can the Kp and Kc for a reaction ever have the same value? Why or why not?

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The following reaction is exothermic.Which change will shift the equilibrium to the left? 2 SO2(g)+ O2(g)⇌ 2 SO3(g)

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Consider the following reaction at equilibrium.What will happen if the pressure increased? 4 FeS2(s)+ 11 O2(g)⇌ 2 Fe2O3(s)+ 8 SO2(g)

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What is △n for the following equation in relating Kc to Kp? KIO3(s)⇌ KIO(s)+ O2(g)

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Express the equilibrium constant for the following reaction. 10 N2(g)+ 30 H2(g)⇔ 20 NH3(g)

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At a certain temperature,Kc equals 1.4 × 102 for the reaction: 2 CO(g)+ O2(g)⇌ 2 CO2(g). If a 3.00-L flask contains 0.400 mol of CO2 and 0.100 mol of O2 at equilibrium,how many moles of CO are also present in the flask?

(Multiple Choice)
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