Exam 16: Chemical Equilibrium

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Consider the following reaction at equilibrium.What effect will increasing the temperature have on the system? C3H8(g)+ 5 O2(g)⇌ 3 CO2(g)+ 4 H2O(l)ΔH° = -2220 kJ

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Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [N2]eq = 3.6 M,[O2]eq = 4.1 M,[N2O]eq = 3.3 × 10-18 M. 2 N2(g)+ O2(g)⇌ 2 N2O(g)

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What is Δn for the following equation in relating Kc to Kp? CH4(g)+ H2O(g)⇌ CO(g)+ 3 H2(g)

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For the reaction: N2(g)+ 2 O2(g)⇌ 2 NO2(g),Kc = 8.3 × 10-10 at 25°C.What is the concentration of N2 gas at equilibrium when the concentration of NO2 is twice the concentration of O2 gas?

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Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [PI5]eq = 0.56 M,[PI3]eq = 0.23 M,[I2]eq = 5.5 M. PI5(g)⇌ PI3(g)+ I2(g)

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Consider the following reaction: 2 H2O(g)+ 2 SO2(g)⇌ 2 H2S(g)+ 3 O2(g) A reaction mixture initially contains 2.8 M H2O and 2.6 M SO2.Determine the equilibrium concentration of H2S if Kc for the reaction at this temperature is 1.3 × 10-6.

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Consider the following reaction,equilibrium concentrations,and equilibrium constant at a particular temperature.Determine the equilibrium concentration of H2O(g). C2H4(g)+ H2O(g)⇌ C2H5OH(g)Kc = 9.0 × 103 [C2H4]eq = 0.015 M [C2H5OH]eq = 1.69 M

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Match the following.
K << 1
reaction is at equilibrium
K ≈ 1
reaction will favor formation of reactants
Q > K
reaction favors formation of more products
Correct Answer:
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Responses:
K << 1
reaction is at equilibrium
K ≈ 1
reaction will favor formation of reactants
Q > K
reaction favors formation of more products
Q < K
reaction does not strongly favor reactants or products
Q = K
reverse reaction is favored
Q >> 1
reaction has a larger amount of products than reactants
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Express the equilibrium constant for the following reaction. P4(s)+ 5 O2(g)⇌ P4O10(s)

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Which of the following statements is TRUE?

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The following reaction is exothermic.What set of conditions will always lead to the equilibrium shifting to the left? 2 NO(g)+ Br2(g)⇌ 2 NOBr(g)

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Why is an equilibrium constant unitless?

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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 0.55 mol of I2 and 0.55 mol of Cl2 are initially mixed in a 2.0-L flask?

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Express the equilibrium constant for the following reaction. 2 Na(s)+ 2 H2O(l)⇌ 2 NaOH(aq)+ H2(g)

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Determine the value of Kp for the following reaction if the equilibrium concentrations are as follows: P(CO)eq = 6.8 × 10-11 atm,P(O2)eq = 1.3 × 10-3 atm,P(CO2)eq = 0.041 atm. 2 CO(g)+ O2(g)⇌ 2 CO2(g)

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What is △n for the following equation in relating Kc to Kp? Li BrO3(s)⇌ Li BrO(s)+ O2(g)

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Consider the following reaction,equilibrium concentrations,and equilibrium constant at a particular temperature.Determine the equilibrium pressure of CO. CO(g)+ 2 H2(g)⇌ CH3OH(l)Kp = 2.25 × 104 P(H2)eq = 0.52 atm

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Consider the following reaction,equilibrium concentrations,and equilibrium constant at a particular temperature.Determine the equilibrium concentration of H2O(g). 2 H2(g)+ O2(g)⇌ 2 H2O(g)Kc = 5.50 × 102 [H2] = 0.480 M [O2] = 0.310 M

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Consider the following reaction at equilibrium.What effect will increasing the pressure of the reaction mixture have on the system? 2 H2S(g)+ 3 O2(g)⇌ 2 H2O(g)+ 2 SO2(g)

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Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [P4O10]eq = 2.000 moles,[P4]eq = 3.000 moles,[O2]eq = 4.000 M P4O10(s)⇌ P4(s)+ 5 O2(g)

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