At 35 °C,Kp = 0.315 for the reaction N2O4(g)⇌ 2 NO2(g),if the initial pressure of NO2(g)in a container is 3.00 atm,what is the equilibrium pressure of N2O4(g)?

A) 1.88 atm B) 0.315 atm C) 0.471 atm D) 1.19 atm E) 0.685 atm A) 1.88 atm B) 0.315 atm C) 0.471 atm D) 1.19 atm E) 0.685 atm

For the reaction: CH4(g)+ 2 H2O(g)⇌ CO2(g)+ 4 H2(g),ΔH° = +190 kJ,when H2(g)is added:

A) the reaction shifts to the right B) the reaction shifts to the left C) the ΔrH° increases D) the temperature increases E) there is no change in equilibrium position A) the reaction shifts to the right B) the reaction shifts to the left C) the ΔrH° increases D) the temperature increases E) there is no change in equilibrium position

Consider the following chemical reaction at equilibrium: 2 Cl2(g)+ 2 H2O(g)⇌ 4 HCl(g)+ O2(g) This equilibrium can be shifted to the right by:

A) removing H2O(g)from the mixture B) adding more O2(g)to the mixture C) adding Ne(g)to the mixture D) decreasing the volume of the mixture E) increasing the volume of the mixture A) removing H2O(g)from the mixture B) adding more O2(g)to the mixture C) adding Ne(g)to the mixture D) decreasing the volume of the mixture E) increasing the volume of the mixture

2.5 moles H2O and 100 g of C are placed in a 50-L container.At equilibrium for the reaction C(s)+ H2O(g)⇌ CO(g)+ H2(g),[H2] = 0.040 M.Which of the following is true?

A) [CO] = 0.020 M B) [H2O] = 0.010 M C) no carbon is left D) [H2O] = 0.020 M E) [C(s)] = 0.04 M A) [CO] = 0.020 M B) [H2O] = 0.010 M C) no carbon is left D) [H2O] = 0.020 M E) [C(s)] = 0.04 M

Consider the following equilibrium reaction: PCl3(g)+ Cl2(g)⇌ PCl5(g)Kc = 96.2 The equilibrium constant for the decomposition of PCl5(g)to PCl3(g)and Cl2(g)is ________.

A) -Kc B) C) D) E) A) -Kc B) C) D) E)

At a certain temperature,nitogen and hydrogen react to form ammonia: N2(g)+ 3 H2(g)⇌ 2 NH3(g) When initial amounts of N2,H2,and NH3 are mixed,the concentration of NH3 increases.Which statement below is TRUE?

A) Kc c > Q C) Kc = Q D) Kc = Q = 0 A) Kc c > Q C) Kc = Q D) Kc = Q = 0

Given that the equilibrium concentrations of [N2] = 0.035 M,[C2H2] = 0.057 M,and [HCN] = 6.8 × 10-4 M,find the value of the equilibrium constant expression for the reaction: N2(g)+ C2H2(g)⇌ 2 HCN

A) 3.4 × 10-1 B) 2.9 C) 4300 D) 2.3 × 10-4 E) 6.8 × 10-1 A) 3.4 × 10-1 B) 2.9 C) 4300 D) 2.3 × 10-4 E) 6.8 × 10-1

For the reaction: 2 SO2(g)+ O2(g)⇌ 2 SO3(g),Kc = 6.9 × 1024 at 25 °C.If a reaction vessel is filled with these gases,such that [SO2] = 6.0 M,[O2] = 6.0 M and [SO3] = 6.0 M,in which direction will the reaction proceed?

A) The reaction proceeds to the right. B) The reaction proceeds to the left. C) The reaction is already at equilibrium. D) The reaction volume must be specified to answer this question. E) The value of Kp must be specified to answer this question. A) The reaction proceeds to the right. B) The reaction proceeds to the left. C) The reaction is already at equilibrium. D) The reaction volume must be specified to answer this question. E) The value of Kp must be specified to answer this question.

For the reaction: CH4(g)+ 2 H2O(g)⇌ CO2(g)+ 4 H2(g),ΔrH° = +190 kJ,when CH4 is added:

A) the reaction shifts to the right B) the reaction shifts to the left C) the ΔrH° increases D) the temperature increases E) there is no change in equilibrium position A) the reaction shifts to the right B) the reaction shifts to the left C) the ΔrH° increases D) the temperature increases E) there is no change in equilibrium position

Exam 15: Principles of Chemical Equilibrium

At 35 °C,K_p = 0.315 for the reaction N₂O₄(g)⇌ 2 NO₂(g),if the initial pressure of NO₂(g)in a container is 3.00 atm,what is the equilibrium pressure of N₂O₄(g)?

(Multiple Choice)

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Question 61

Choose the correct statement about a container in which the chemical equilibrium is established: 2 SO₂(g)+ O₂(g)⇌ 2 SO₃(g)+ heat

(Multiple Choice)

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Question 62

For the reaction: CH₄(g)+ 2 H₂O(g)⇌ CO₂(g)+ 4 H₂(g),ΔH° = +190 kJ,when H₂(g)is added:

(Multiple Choice)

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Question 63

A mixture containing 0.392 M A(g)and 0.452 M B(g)is allowed to come to equilibrium at 300 K.The reaction 3 A(g)+ 2 B(g)⇌ C(g)+ D(g)occurs.At equilibrium,[C] = 0.00128 M.What is the value of K_c?

(Multiple Choice)

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Question 64

Consider the following chemical reaction at equilibrium: 2 Cl₂(g)+ 2 H₂O(g)⇌ 4 HCl(g)+ O₂(g) This equilibrium can be shifted to the right by:

(Multiple Choice)

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Question 65

The decomposition of ammonia is 2 NH₃(g)→ N₂(g)+ 3 H₂(g).If K_p is 1.5 × 10³ at 400 °C,what is the partial pressure of ammonia at equilibrium when the partial pressure of N₂(g)is 0.10 bar and that of H₂(g)is 0.15 bar?

(Multiple Choice)

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Question 66

2.5 moles H₂O and 100 g of C are placed in a 50-L container.At equilibrium for the reaction C(s)+ H₂O(g)⇌ CO(g)+ H₂(g),[H₂] = 0.040 M.Which of the following is true?

(Multiple Choice)

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Question 67

Given the following: I.N₂O(g)+ 1/2 O₂(g)⇌ 2 NO(g)K_c = 1.7 × 10^-13 II.N₂(g)+ O₂(g)⇌ 2 NO(g)K_c = 4.1 × 10^-31 Find the value of the equilibrium constant for the following equilibrium reaction: N₂(g)+ 1/2 O₂(g)⇌ N₂O(g)

(Multiple Choice)

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Question 68

Consider the following equilibrium reaction: PCl₃(g)+ Cl₂(g)⇌ PCl₅(g)K_c = 96.2 The equilibrium constant for the decomposition of PCl₅(g)to PCl₃(g)and Cl₂(g)is ________.

(Multiple Choice)

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Question 69

At a certain temperature,nitogen and hydrogen react to form ammonia: N₂(g)+ 3 H₂(g)⇌ 2 NH₃(g) When initial amounts of N₂,H₂,and NH₃ are mixed,the concentration of NH₃ increases.Which statement below is TRUE?

(Multiple Choice)

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Question 70

Given that the equilibrium concentrations of [N₂] = 0.035 M,[C₂H₂] = 0.057 M,and [HCN] = 6.8 × 10^-4 M,find the value of the equilibrium constant expression for the reaction: N₂(g)+ C₂H₂(g)⇌ 2 HCN

(Multiple Choice)

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Question 71

For a solute (X)aq,in an ideal aqueous solution,its activity equals its concentration.

(True/False)

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Question 72

The equilibrium constant,K_p,equals 3.40 at 25 °C for the isomerization reaction: Cis-2-butene ⇌ trans-2-butene If a flask initially contains 5.00 bar of each gas,in what direction will the system shift to reach equilibrium?

(Multiple Choice)

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Question 73

For the reaction: 2 SO₂(g)+ O₂(g)⇌ 2 SO₃(g),K_c = 6.9 × 10²⁴ at 25 °C.If a reaction vessel is filled with these gases,such that [SO₂] = 6.0 M,[O₂] = 6.0 M and [SO₃] = 6.0 M,in which direction will the reaction proceed?

(Multiple Choice)

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Question 74

Which of the following substances present in the chemical reaction would be excluded from the equilibrium constant expression?

(Multiple Choice)

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Question 75

For the reaction: CH₄(g)+ 2 H₂O(g)⇌ CO₂(g)+ 4 H₂(g),Δ_rH° = +190 kJ,when CH₄ is added:

(Multiple Choice)

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Question 76

Both products and reactants will be present in an equilibrium reaction unless K is very small or very large.

(True/False)

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Question 77

Large value for equilibrium constant K means the reaction will be less complete at the equilibrium point.

(True/False)

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Question 78

For a reaction,the reaction quotient,Q_c > K_c ,the reaction ________.

(Multiple Choice)

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Question 79

According to Le Chatelier's Principle:

(Multiple Choice)

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Question 80

Showing 61 - 80 of 118

Exam 15: Principles of Chemical Equilibrium

At 35 °C,Kp = 0.315 for the reaction N2O4(g)⇌ 2 NO2(g),if the initial pressure of NO2(g)in a container is 3.00 atm,what is the equilibrium pressure of N2O4(g)?

Choose the correct statement about a container in which the chemical equilibrium is established: 2 SO2(g)+ O2(g)⇌ 2 SO3(g)+ heat

For the reaction: CH4(g)+ 2 H2O(g)⇌ CO2(g)+ 4 H2(g),ΔH° = +190 kJ,when H2(g)is added:

A mixture containing 0.392 M A(g)and 0.452 M B(g)is allowed to come to equilibrium at 300 K.The reaction 3 A(g)+ 2 B(g)⇌ C(g)+ D(g)occurs.At equilibrium,[C] = 0.00128 M.What is the value of Kc?

Consider the following chemical reaction at equilibrium: 2 Cl2(g)+ 2 H2O(g)⇌ 4 HCl(g)+ O2(g) This equilibrium can be shifted to the right by:

The decomposition of ammonia is 2 NH3(g)→ N2(g)+ 3 H2(g).If Kp is 1.5 × 103 at 400 °C,what is the partial pressure of ammonia at equilibrium when the partial pressure of N2(g)is 0.10 bar and that of H2(g)is 0.15 bar?

2.5 moles H2O and 100 g of C are placed in a 50-L container.At equilibrium for the reaction C(s)+ H2O(g)⇌ CO(g)+ H2(g),[H2] = 0.040 M.Which of the following is true?

Given the following: I.N2O(g)+ 1/2 O2(g)⇌ 2 NO(g)Kc = 1.7 × 10-13 II.N2(g)+ O2(g)⇌ 2 NO(g)Kc = 4.1 × 10-31 Find the value of the equilibrium constant for the following equilibrium reaction: N2(g)+ 1/2 O2(g)⇌ N2O(g)

Consider the following equilibrium reaction: PCl3(g)+ Cl2(g)⇌ PCl5(g)Kc = 96.2 The equilibrium constant for the decomposition of PCl5(g)to PCl3(g)and Cl2(g)is ________.

At a certain temperature,nitogen and hydrogen react to form ammonia: N2(g)+ 3 H2(g)⇌ 2 NH3(g) When initial amounts of N2,H2,and NH3 are mixed,the concentration of NH3 increases.Which statement below is TRUE?

Given that the equilibrium concentrations of [N2] = 0.035 M,[C2H2] = 0.057 M,and [HCN] = 6.8 × 10-4 M,find the value of the equilibrium constant expression for the reaction: N2(g)+ C2H2(g)⇌ 2 HCN

For a solute (X)aq,in an ideal aqueous solution,its activity equals its concentration.

The equilibrium constant,Kp,equals 3.40 at 25 °C for the isomerization reaction: Cis-2-butene ⇌ trans-2-butene If a flask initially contains 5.00 bar of each gas,in what direction will the system shift to reach equilibrium?

For the reaction: 2 SO2(g)+ O2(g)⇌ 2 SO3(g),Kc = 6.9 × 1024 at 25 °C.If a reaction vessel is filled with these gases,such that [SO2] = 6.0 M,[O2] = 6.0 M and [SO3] = 6.0 M,in which direction will the reaction proceed?

Which of the following substances present in the chemical reaction would be excluded from the equilibrium constant expression?

For the reaction: CH4(g)+ 2 H2O(g)⇌ CO2(g)+ 4 H2(g),ΔrH° = +190 kJ,when CH4 is added:

Both products and reactants will be present in an equilibrium reaction unless K is very small or very large.

Large value for equilibrium constant K means the reaction will be less complete at the equilibrium point.

For a reaction,the reaction quotient,Qc > Kc ,the reaction ________.

According to Le Chatelier's Principle:

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At 35 °C,K_p = 0.315 for the reaction N₂O₄(g)⇌ 2 NO₂(g),if the initial pressure of NO₂(g)in a container is 3.00 atm,what is the equilibrium pressure of N₂O₄(g)?

Choose the correct statement about a container in which the chemical equilibrium is established: 2 SO₂(g)+ O₂(g)⇌ 2 SO₃(g)+ heat

For the reaction: CH₄(g)+ 2 H₂O(g)⇌ CO₂(g)+ 4 H₂(g),ΔH° = +190 kJ,when H₂(g)is added:

A mixture containing 0.392 M A(g)and 0.452 M B(g)is allowed to come to equilibrium at 300 K.The reaction 3 A(g)+ 2 B(g)⇌ C(g)+ D(g)occurs.At equilibrium,[C] = 0.00128 M.What is the value of K_c?

Consider the following chemical reaction at equilibrium: 2 Cl₂(g)+ 2 H₂O(g)⇌ 4 HCl(g)+ O₂(g) This equilibrium can be shifted to the right by:

The decomposition of ammonia is 2 NH₃(g)→ N₂(g)+ 3 H₂(g).If K_p is 1.5 × 10³ at 400 °C,what is the partial pressure of ammonia at equilibrium when the partial pressure of N₂(g)is 0.10 bar and that of H₂(g)is 0.15 bar?

2.5 moles H₂O and 100 g of C are placed in a 50-L container.At equilibrium for the reaction C(s)+ H₂O(g)⇌ CO(g)+ H₂(g),[H₂] = 0.040 M.Which of the following is true?

Given the following: I.N₂O(g)+ 1/2 O₂(g)⇌ 2 NO(g)K_c = 1.7 × 10^-13 II.N₂(g)+ O₂(g)⇌ 2 NO(g)K_c = 4.1 × 10^-31 Find the value of the equilibrium constant for the following equilibrium reaction: N₂(g)+ 1/2 O₂(g)⇌ N₂O(g)

Consider the following equilibrium reaction: PCl₃(g)+ Cl₂(g)⇌ PCl₅(g)K_c = 96.2 The equilibrium constant for the decomposition of PCl₅(g)to PCl₃(g)and Cl₂(g)is ________.

At a certain temperature,nitogen and hydrogen react to form ammonia: N₂(g)+ 3 H₂(g)⇌ 2 NH₃(g) When initial amounts of N₂,H₂,and NH₃ are mixed,the concentration of NH₃ increases.Which statement below is TRUE?

Given that the equilibrium concentrations of [N₂] = 0.035 M,[C₂H₂] = 0.057 M,and [HCN] = 6.8 × 10^-4 M,find the value of the equilibrium constant expression for the reaction: N₂(g)+ C₂H₂(g)⇌ 2 HCN

The equilibrium constant,K_p,equals 3.40 at 25 °C for the isomerization reaction: Cis-2-butene ⇌ trans-2-butene If a flask initially contains 5.00 bar of each gas,in what direction will the system shift to reach equilibrium?

For the reaction: 2 SO₂(g)+ O₂(g)⇌ 2 SO₃(g),K_c = 6.9 × 10²⁴ at 25 °C.If a reaction vessel is filled with these gases,such that [SO₂] = 6.0 M,[O₂] = 6.0 M and [SO₃] = 6.0 M,in which direction will the reaction proceed?

For the reaction: CH₄(g)+ 2 H₂O(g)⇌ CO₂(g)+ 4 H₂(g),Δ_rH° = +190 kJ,when CH₄ is added:

For a reaction,the reaction quotient,Q_c > K_c ,the reaction ________.