Question 1

What is the mass-action expression, 3O+(aq)  + 2Cl-(aq)  + MnO2(s)    Mn2+(aq)  + 6H2O(l)  + Cl2(g)  A)    B)    C)    D)    E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > c, for the following chemical reaction? 4H3O+(aq)  + 2Cl-(aq)  + MnO2(s)  3O+(aq)  + 2Cl-(aq)  + MnO2(s)    Mn2+(aq)  + 6H2O(l)  + Cl2(g)  A)    B)    C)    D)    E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > Mn2+(aq)  + 6H2O(l)  + Cl2(g)

Accepted Answer

A)   3O+(aq)  + 2Cl-(aq)  + MnO2(s)    Mn2+(aq)  + 6H2O(l)  + Cl2(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
B)   3O+(aq)  + 2Cl-(aq)  + MnO2(s)    Mn2+(aq)  + 6H2O(l)  + Cl2(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
C)   3O+(aq)  + 2Cl-(aq)  + MnO2(s)    Mn2+(aq)  + 6H2O(l)  + Cl2(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
D)   3O+(aq)  + 2Cl-(aq)  + MnO2(s)    Mn2+(aq)  + 6H2O(l)  + Cl2(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
E)   None of these choices are correct.F) A) and B)
G) C) and E)

Question 2

The equilibrium constant, Kp, has a value of 6.5 × 10-4 at 308 K for the reaction of nitrogen monoxide with chlorine. 2NO(g)  + Cl2(g)  p, has a value of 6.5 × 10-4 at 308 K for the reaction of nitrogen monoxide with chlorine. 2NO(g)  + Cl2(g)    2NOCl(g)  What is the value of Kc? A)  2.5 × 10-7 B)  6.5 × 10-4 C)  1.6 × 10-2 D)  1.7 E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > 2NOCl(g) 
What is the value of Kc?

Accepted Answer

A)   2.5 × 10-7
B)   6.5 × 10-4
C)   1.6 × 10-2
D)   1.7
E)   None of these choices are correct.F) C) and E)
G) B) and E)

Question 3

The equilibrium constant Kc for the reaction PCl3(g)  + Cl2(g)  3(g)  + Cl2(g)    PCl5(g)  Is 49 at 230°C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230°C, what is the concentration of PCl3 when equilibrium has been established? A)  0.049 M B)  0.11 M C)  0.30 M D)  0.59 M E)  0.83 M" class="answers-bank-image d-inline" rel="preload" > PCl5(g) 
Is 49 at 230°C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230°C, what is the concentration of PCl3 when equilibrium has been established?

Accepted Answer

A)   0.049 M
B)   0.11 M
C)   0.30 M
D)   0.59 M
E)   0.83 MF) A) and E)
G) B) and C)

Question 4

Write the mass-action expression, 2(g)  + ½O2(g)    MgSO4(s)  A)    B)    C)    D)    E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > c, for the following chemical reaction. MgO(s)  + SO2(g)  + ½O2(g)  2(g)  + ½O2(g)    MgSO4(s)  A)    B)    C)    D)    E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > MgSO4(s)

Accepted Answer

A)   2(g)  + ½O2(g)    MgSO4(s)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
B)   2(g)  + ½O2(g)    MgSO4(s)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
C)   2(g)  + ½O2(g)    MgSO4(s)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
D)   2(g)  + ½O2(g)    MgSO4(s)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
E)   None of these choices are correct.F) A) and C)
G) A) and D)

Question 5

Hydrogen iodide, HI, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. If 20.0 g of hydrogen and 20.0 g of iodine are heated, forming 10.0 g of hydrogen iodide, what mass of hydrogen remains unreacted?

Accepted Answer

A)   10.0 g hydrogen remains
B)   10.9 g hydrogen remains
C)   15.0 g hydrogen remains
D)   19.9 g hydrogen remains
E)   Need to know the equilibrium constant in order to calculate the answer.F) A) and C)
G) A) and E)

Question 6

The reaction quotient for a gas phase reaction has a value of 2000. If the number of moles of reactants in the reaction equation is equal to that of the products, which of the following statements is definitely true?

Accepted Answer

A)   The reaction must proceed to the left to establish equilibrium.
B)   The reaction must proceed to the right to establish equilibrium.
C)   When the system is at equilibrium, the concentrations of the products will be much larger than the concentrations of the reactants.
D)   The concentrations of the products are generally larger than the concentrations of the reactants.
E)   None of these choices are correct.F) B) and E)
G) B) and D)

Question 7

There is a direct correlation between the speed of a reaction and its equilibrium constant.

Accepted Answer

A) True 
 B)False

Question 8

A mixture of 0.600 mol of bromine and 1.600 mol of iodine is placed into a rigid 1.000-L container at 350°C. Br2(g)  + I2(g)  2(g)  + I2(g)    2IBr(g)  When the mixture has come to equilibrium, the concentration of iodine monobromide is 1.190 M. What is the equilibrium constant for this reaction at 350°C? A)  3.55 × 10-3 B)  1.24 C)  1.47 D)  282 E)  325" class="answers-bank-image d-inline" rel="preload" > 2IBr(g) 
When the mixture has come to equilibrium, the concentration of iodine monobromide is 1.190 M. What is the equilibrium constant for this reaction at 350°C?

Accepted Answer

A)   3.55 × 10-3
B)   1.24
C)   1.47
D)   282
E)   325F) C) and D)
G) D) and E)

Question 9

Although a system may be at equilibrium, the rate constants of the forward and reverse reactions will in general be different.

Accepted Answer

A) True 
 B)False

Question 10

The following reaction, in CCl4 solvent, has been studied at 25°C. 2BrCl 2 + Cl2 The equilibrium constant Kc is known to be 0.141. If the initial concentration of chlorine is 0.0300 M and of bromine monochloride is 0.0200 M, what is the equilibrium concentration of bromine? A)  1.35 × 10-3 M B)  2.70 × 10-3 M C)  8.82 × 10-3 M D)  9.70 × 10-2 M E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > Br2 + Cl2
The equilibrium constant Kc is known to be 0.141. If the initial concentration of chlorine is 0.0300 M and of bromine monochloride is 0.0200 M, what is the equilibrium concentration of bromine?

Accepted Answer

A)   1.35 × 10-3 M
B)   2.70 × 10-3 M
C)   8.82 × 10-3 M
D)   9.70 × 10-2 M
E)   None of these choices are correct.F) A) and E)
G) C) and D)

Question 11

The equilibrium constant, Kc, for the decomposition of COBr2 COBr2(g)  c, for the decomposition of COBr2 COBr2(g)    CO(g)  + Br2(g)  Is 0.190. What is Kc for the following reaction? 2CO(g)  + 2Br2(g)    2COBr2(g)  A)  0.0361 B)  2.63 C)  5.62 D)  10.5 E)  27.7" class="answers-bank-image d-inline" rel="preload" > CO(g)  + Br2(g) 
Is 0.190. What is Kc for the following reaction?
2CO(g)  + 2Br2(g)  c, for the decomposition of COBr2 COBr2(g)    CO(g)  + Br2(g)  Is 0.190. What is Kc for the following reaction? 2CO(g)  + 2Br2(g)    2COBr2(g)  A)  0.0361 B)  2.63 C)  5.62 D)  10.5 E)  27.7" class="answers-bank-image d-inline" rel="preload" > 2COBr2(g)

Accepted Answer

A)   0.0361
B)   2.63
C)   5.62
D)   10.5
E)   27.7F) A) and B)
G) D) and E)

Question 12

About half of the sodium carbonate produced is used in making glass products because it lowers the melting point of sand, the major component of glass. When sodium carbonate is added to water it hydrolyses according to the following reactions. CO32-(aq)  + H2O(l)  32-(aq)  + H2O(l)    HCO3-(aq)  + OH-(aq)  K1 HCO3(aq)  + H2O(l)    H2CO3(aq)  + OH-(aq)  K2 These can be combined to yield CO32-(aq)  + 2H2O(l)    H2CO3(aq)  + 2OH-(aq)  K3 What is the value of K3? A)  K1 × K2 B)  K1 ÷ K2 C)  K1 + K2 D)  K1 - K2 E)  (K1K2) 2" class="answers-bank-image d-inline" rel="preload" > HCO3-(aq)  + OH-(aq)  K1
HCO3(aq)  + H2O(l)  32-(aq)  + H2O(l)    HCO3-(aq)  + OH-(aq)  K1 HCO3(aq)  + H2O(l)    H2CO3(aq)  + OH-(aq)  K2 These can be combined to yield CO32-(aq)  + 2H2O(l)    H2CO3(aq)  + 2OH-(aq)  K3 What is the value of K3? A)  K1 × K2 B)  K1 ÷ K2 C)  K1 + K2 D)  K1 - K2 E)  (K1K2) 2" class="answers-bank-image d-inline" rel="preload" > H2CO3(aq)  + OH-(aq)  K2
These can be combined to yield
CO32-(aq)  + 2H2O(l)  32-(aq)  + H2O(l)    HCO3-(aq)  + OH-(aq)  K1 HCO3(aq)  + H2O(l)    H2CO3(aq)  + OH-(aq)  K2 These can be combined to yield CO32-(aq)  + 2H2O(l)    H2CO3(aq)  + 2OH-(aq)  K3 What is the value of K3? A)  K1 × K2 B)  K1 ÷ K2 C)  K1 + K2 D)  K1 - K2 E)  (K1K2) 2" class="answers-bank-image d-inline" rel="preload" > H2CO3(aq)  + 2OH-(aq)  K3
What is the value of K3?

Accepted Answer

A)   K1 × K2
B)   K1 ÷ K2
C)   K1 + K2
D)   K1 - K2
E)   (K1K2) 2F) C) and D)
G) A) and C)

Question 13

The reaction system POCl3(g)  3(g)    POCl(g)  + Cl2(g)  Is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of chlorine is reduced by 50%? A)  POCl3 will be consumed as equilibrium is established. B)  POCl will be consumed as equilibrium is established. C)  Chlorine will be consumed as equilibrium is established. D)  The partial pressure of POCl will decrease while the partial pressure of Cl2 increases as equilibrium is established. E)  The volume will have to decrease before equilibrium can be reestablished." class="answers-bank-image d-inline" rel="preload" > POCl(g)  + Cl2(g) 
Is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of chlorine is reduced by 50%?

Accepted Answer

A)   POCl3 will be consumed as equilibrium is established.
B)   POCl will be consumed as equilibrium is established.
C)   Chlorine will be consumed as equilibrium is established.
D)   The partial pressure of POCl will decrease while the partial pressure of Cl2 increases as equilibrium is established.
E)   The volume will have to decrease before equilibrium can be reestablished.F) A) and D)
G) None of the above

Question 14

What is the mass-action expression, p, for the following reaction? SbF5(g)  + 4Cl2(g)  5(g)  + 4Cl2(g)    SbCl3(g)  + 5ClF(g)  A)    B)    C)    D)    E)  None of these choices are correct." class="answers-bank-image d-inline" rel="preload" > SbCl3(g)  + 5ClF(g)

Accepted Answer

A)   5(g)  + 4Cl2(g)    SbCl3(g)  + 5ClF(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
B)   5(g)  + 4Cl2(g)    SbCl3(g)  + 5ClF(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
C)   5(g)  + 4Cl2(g)    SbCl3(g)  + 5ClF(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
D)   5(g)  + 4Cl2(g)    SbCl3(g)  + 5ClF(g)  
A)     
B)     
C)     
D)     
E)   None of these choices are correct." class="answers-bank-image d-inline" rel="preload" >
E)   None of these choices are correct.F) D) and E)
G) A) and B)

Question 15

Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane: 2C17H35COOH 17H35COOH   (C17H35COOH) 2 ΔH°rxn = -172 kJ The equilibrium constant for this reaction at 28°C is 2900. Estimate the equilibrium constant at 38°C. A)  4.7 × 105 B)  2.6 × 104 C)  1.9 × 103 D)  3.2 × 102 E)  18" class="answers-bank-image d-inline" rel="preload" > (C17H35COOH) 2 ΔH°rxn = -172 kJ
The equilibrium constant for this reaction at 28°C is 2900. Estimate the equilibrium constant at 38°C.

Accepted Answer

A)   4.7 × 105
B)   2.6 × 104
C)   1.9 × 103
D)   3.2 × 102
E)   18F) C) and D)
G) B) and D)

Question 16

SO2 reacts with O2 to produce SO3. If 86.0 g of SO2 is placed in a reaction vessel along with excess oxygen gas, how many moles of SO2 remain when 50.0 g of SO3 have been formed?

Accepted Answer

A)   0.56 mol
B)   0.62 mol
C)   0.72 mol
D)   0.78 mol
E)   1.34 molF) A) and B)
G) A) and C)

Question 17

Carbon monoxide and chlorine combine in an equilibrium reaction to produce the highly toxic product, phosgene (COCl2)  CO(g)  + Cl2(g)  2)  CO(g)  + Cl2(g)    COCl2(g)  If the equilibrium constant for this reaction is Kc = 248, predict, if possible, what will happen when the reactants and product are combined with the concentrations shown. [CO] = [Cl2] = 0.0200 M; [COCl2] = 0.0992 M A)  The reaction will proceed to the right. B)  The reaction will proceed to the left. C)  The reaction is at equilibrium, and no change in concentrations will occur. D)  The container volume needs to be specified before a prediction can be made. E)  The temperature needs to be specified before a prediction can be made." class="answers-bank-image d-inline" rel="preload" > COCl2(g) 
If the equilibrium constant for this reaction is Kc = 248, predict, if possible, what will happen when the reactants and product are combined with the concentrations shown.
[CO] = [Cl2] = 0.0200 M; [COCl2] = 0.0992 M

Accepted Answer

A)   The reaction will proceed to the right.
B)   The reaction will proceed to the left.
C)   The reaction is at equilibrium, and no change in concentrations will occur.
D)   The container volume needs to be specified before a prediction can be made.
E)   The temperature needs to be specified before a prediction can be made.F) A) and E)
G) C) and D)

Exam 17: Equilibrium the Extent of Chemical Reactions

The equilibrium constant, K_p, has a value of 6.5 × 10^-4 at 308 K for the reaction of nitrogen monoxide with chlorine. 2NO(g) + Cl₂(g) 2NOCl(g) What is the value of K_c?

Correct Answer
verified

The reaction system POCl₃(g) POCl(g) + Cl₂(g) Is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of chlorine is reduced by 50%?

Correct Answer
verified

Write the mass-action expression, c, for the following chemical reaction. MgO(s) + SO₂(g) + ½O₂(g) MgSO₄(s)

Correct Answer
verified

What is the mass-action expression, p, for the following reaction? SbF₅(g) + 4Cl₂(g) SbCl₃(g) + 5ClF(g)

Correct Answer
verified

The equilibrium constant, K_c, for the decomposition of COBr₂ COBr₂(g) CO(g) + Br₂(g) Is 0.190. What is K_c for the following reaction? 2CO(g) + 2Br₂(g) 2COBr₂(g)

Correct Answer
verified

There is a direct correlation between the speed of a reaction and its equilibrium constant.

Correct Answer
verified

Hydrogen iodide, HI, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. If 20.0 g of hydrogen and 20.0 g of iodine are heated, forming 10.0 g of hydrogen iodide, what mass of hydrogen remains unreacted?

Correct Answer
verified

What is the mass-action expression, c, for the following chemical reaction? 4H₃O⁺(aq) + 2Cl^-(aq) + MnO₂(s) Mn²⁺(aq) + 6H₂O(l) + Cl₂(g)

Correct Answer
verified

A mixture of 0.600 mol of bromine and 1.600 mol of iodine is placed into a rigid 1.000-L container at 350°C. Br₂(g) + I₂(g) 2IBr(g) When the mixture has come to equilibrium, the concentration of iodine monobromide is 1.190 M. What is the equilibrium constant for this reaction at 350°C?

Correct Answer
verified

Correct Answer
verified

The following reaction, in CCl4 solvent, has been studied at 25°C. 2BrCl Br₂ + Cl₂ The equilibrium constant Kc is known to be 0.141. If the initial concentration of chlorine is 0.0300 M and of bromine monochloride is 0.0200 M, what is the equilibrium concentration of bromine?

Correct Answer
verified

The equilibrium constant Kc for the reaction PCl₃(g) + Cl₂(g) PCl₅(g) Is 49 at 230°C. If 0.70 mol of PCl₃ is added to 0.70 mol of Cl₂ in a 1.00-L reaction vessel at 230°C, what is the concentration of PCl₃ when equilibrium has been established?

Correct Answer
verified

SO₂ reacts with O₂ to produce SO₃. If 86.0 g of SO₂ is placed in a reaction vessel along with excess oxygen gas, how many moles of SO₂ remain when 50.0 g of SO₃ have been formed?

Correct Answer
verified

The reaction quotient for a gas phase reaction has a value of 2000. If the number of moles of reactants in the reaction equation is equal to that of the products, which of the following statements is definitely true?

Correct Answer
verified

Although a system may be at equilibrium, the rate constants of the forward and reverse reactions will in general be different.

Correct Answer
verified

Correct Answer
verified

Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane: 2C₁₇H₃₅COOH (C₁₇H₃₅COOH) ₂ ΔH°_rxn = -172 kJ The equilibrium constant for this reaction at 28°C is 2900. Estimate the equilibrium constant at 38°C.

Correct Answer
verified

Exam 17: Equilibrium the Extent of Chemical Reactions

The equilibrium constant, Kp, has a value of 6.5 × 10-4 at 308 K for the reaction of nitrogen monoxide with chlorine. 2NO(g) + Cl2(g) 2NOCl(g) What is the value of Kc?

Correct AnswerverifiedShow Answer

The reaction system POCl3(g) POCl(g) + Cl2(g) Is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of chlorine is reduced by 50%?

Correct AnswerverifiedShow Answer

Write the mass-action expression, c, for the following chemical reaction. MgO(s) + SO2(g) + ½O2(g) MgSO4(s)

Correct AnswerverifiedShow Answer

What is the mass-action expression, p, for the following reaction? SbF5(g) + 4Cl2(g) SbCl3(g) + 5ClF(g)

Correct AnswerverifiedShow Answer

The equilibrium constant, Kc, for the decomposition of COBr2 COBr2(g) CO(g) + Br2(g) Is 0.190. What is Kc for the following reaction? 2CO(g) + 2Br2(g) 2COBr2(g)

Correct AnswerverifiedShow Answer

There is a direct correlation between the speed of a reaction and its equilibrium constant.

Correct AnswerverifiedShow Answer

Hydrogen iodide, HI, is formed in an equilibrium reaction when gaseous hydrogen and iodine gas are heated together. If 20.0 g of hydrogen and 20.0 g of iodine are heated, forming 10.0 g of hydrogen iodide, what mass of hydrogen remains unreacted?

Correct AnswerverifiedShow Answer

What is the mass-action expression, c, for the following chemical reaction? 4H3O+(aq) + 2Cl-(aq) + MnO2(s) Mn2+(aq) + 6H2O(l) + Cl2(g)

Correct AnswerverifiedShow Answer

A mixture of 0.600 mol of bromine and 1.600 mol of iodine is placed into a rigid 1.000-L container at 350°C. Br2(g) + I2(g) 2IBr(g) When the mixture has come to equilibrium, the concentration of iodine monobromide is 1.190 M. What is the equilibrium constant for this reaction at 350°C?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The following reaction, in CCl4 solvent, has been studied at 25°C. 2BrCl Br2 + Cl2 The equilibrium constant Kc is known to be 0.141. If the initial concentration of chlorine is 0.0300 M and of bromine monochloride is 0.0200 M, what is the equilibrium concentration of bromine?

Correct AnswerverifiedShow Answer

The equilibrium constant Kc for the reaction PCl3(g) + Cl2(g) PCl5(g) Is 49 at 230°C. If 0.70 mol of PCl3 is added to 0.70 mol of Cl2 in a 1.00-L reaction vessel at 230°C, what is the concentration of PCl3 when equilibrium has been established?

Correct AnswerverifiedShow Answer

SO2 reacts with O2 to produce SO3. If 86.0 g of SO2 is placed in a reaction vessel along with excess oxygen gas, how many moles of SO2 remain when 50.0 g of SO3 have been formed?

Correct AnswerverifiedShow Answer

The reaction quotient for a gas phase reaction has a value of 2000. If the number of moles of reactants in the reaction equation is equal to that of the products, which of the following statements is definitely true?

Correct AnswerverifiedShow Answer

Although a system may be at equilibrium, the rate constants of the forward and reverse reactions will in general be different.

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane: 2C17H35COOH (C17H35COOH) 2 ΔH°rxn = -172 kJ The equilibrium constant for this reaction at 28°C is 2900. Estimate the equilibrium constant at 38°C.

Correct AnswerverifiedShow Answer

The equilibrium constant, K_p, has a value of 6.5 × 10^-4 at 308 K for the reaction of nitrogen monoxide with chlorine. 2NO(g) + Cl₂(g) 2NOCl(g) What is the value of K_c?

Correct Answer
verified

The reaction system POCl₃(g) POCl(g) + Cl₂(g) Is at equilibrium. Which of the following statements describes the behavior of the system if the partial pressure of chlorine is reduced by 50%?

Correct Answer
verified

Write the mass-action expression, c, for the following chemical reaction. MgO(s) + SO₂(g) + ½O₂(g) MgSO₄(s)

Correct Answer
verified

What is the mass-action expression, p, for the following reaction? SbF₅(g) + 4Cl₂(g) SbCl₃(g) + 5ClF(g)

Correct Answer
verified

The equilibrium constant, K_c, for the decomposition of COBr₂ COBr₂(g) CO(g) + Br₂(g) Is 0.190. What is K_c for the following reaction? 2CO(g) + 2Br₂(g) 2COBr₂(g)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

What is the mass-action expression, c, for the following chemical reaction? 4H₃O⁺(aq) + 2Cl^-(aq) + MnO₂(s) Mn²⁺(aq) + 6H₂O(l) + Cl₂(g)

Correct Answer
verified

A mixture of 0.600 mol of bromine and 1.600 mol of iodine is placed into a rigid 1.000-L container at 350°C. Br₂(g) + I₂(g) 2IBr(g) When the mixture has come to equilibrium, the concentration of iodine monobromide is 1.190 M. What is the equilibrium constant for this reaction at 350°C?

Correct Answer
verified

Correct Answer
verified

The following reaction, in CCl4 solvent, has been studied at 25°C. 2BrCl Br₂ + Cl₂ The equilibrium constant Kc is known to be 0.141. If the initial concentration of chlorine is 0.0300 M and of bromine monochloride is 0.0200 M, what is the equilibrium concentration of bromine?

Correct Answer
verified

The equilibrium constant Kc for the reaction PCl₃(g) + Cl₂(g) PCl₅(g) Is 49 at 230°C. If 0.70 mol of PCl₃ is added to 0.70 mol of Cl₂ in a 1.00-L reaction vessel at 230°C, what is the concentration of PCl₃ when equilibrium has been established?

Correct Answer
verified

SO₂ reacts with O₂ to produce SO₃. If 86.0 g of SO₂ is placed in a reaction vessel along with excess oxygen gas, how many moles of SO₂ remain when 50.0 g of SO₃ have been formed?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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Stearic acid, nature's most common fatty acid, dimerizes when dissolved in hexane: 2C₁₇H₃₅COOH (C₁₇H₃₅COOH) ₂ ΔH°_rxn = -172 kJ The equilibrium constant for this reaction at 28°C is 2900. Estimate the equilibrium constant at 38°C.

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