Question 1

The phase diagram for a pure compound is given below .All of the following could have a similar phase diagram except

Accepted Answer

A)  methanol 
B)  carbon dioxide 
C)  benzene 
D)  carbon tetrachloride 
E)  water 
A)  methanol 
B)  carbon dioxide 
C)  benzene 
D)  carbon tetrachloride 
E)  water

Question 2

Consider the reaction below:
F2(g) $f$ 
2F(g)
(a)Compressing the reaction mixture results in a change in Q.
(b)Heating the reaction mixture causes the reaction to shift to the left
(c)At 1000 K,the equilibrium constant for the reaction is about 10F1F1F1S1$\omicron$F1F1F104.If the reaction is perturbed such that Q = 1,the reaction must shift to the left

Accepted Answer

(a)True
(b

Question 3

How is a reaction quotient defined?

Accepted Answer

A)  As the rate constant of the forward reaction divided by the rate constant of the reverse reaction. 
B)  As concentrations of reactants divided by concentrations of products. 
C)  As concentrations of products divided by concentrations of reactants. 
D)  None of the above. 
A)  As the rate constant of the forward reaction divided by the rate constant of the reverse reaction. 
B)  As concentrations of reactants divided by concentrations of products. 
C)  As concentrations of products divided by concentrations of reactants. 
D)  None of the above.

Question 4

What is the highest temperature that the substance shown in the following phase diagram can exist as a liquid?

Accepted Answer

A)  any temperature above 200 K 
B)  200 K 
C)  250 K 
D)  350 K 
E)  400 K 
A)  any temperature above 200 K 
B)  200 K 
C)  250 K 
D)  350 K 
E)  400 K

Question 5

The osmotic pressure of 1.00 g of a polymer dissolved in benzene to give 200 mL of solution is 1.50 kPa at 25$\omicron$C .Estimate the average molar mass of the polymer.The gas law constant is 0.0821 LF1F1F1S1.F1F1F10atmF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101F1F1F1S1.F1F1F10KF1F1F1S1-F1F1F101.

Accepted Answer

A)  41 300 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
B)  8260 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
C)  693 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
D)  1650 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
E)  62 000 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
A)  41 300 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
B)  8260 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
C)  693 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
D)  1650 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101  
E)  62 000 gF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101

Question 6

From a plot of Gibbs free energy versus progress of reaction,the sign of $\Delta$Gr at any point along the curve is given by the slope of the curve

Accepted Answer

A) True 
 B)False

Question 7

The vapor pressure of water above 40 mL of water in a 100 mL container is 23.8 Torr at 25$\omicron$C .What is the vapor pressure of the water if the volume of the container is changed to 50 mL?

Accepted Answer

A)  About 25 Torr 
B)  About 20 Torr 
C)  23.8 Torr 
D)  47.6 Torr 
E)  11.9 Torr 
A)  About 25 Torr 
B)  About 20 Torr 
C)  23.8 Torr 
D)  47.6 Torr 
E)  11.9 Torr

Question 8

The phase diagram for a pure compound is shown below .The triple point occurs at

Accepted Answer

A)  50 atm and 200 K. 
B)  0 atm and 200 K. 
C)  greater than 50 atm and greater than 200 K. 
D)  320 atm and 250 K. 
E)  200 atm and 400 K. 
A)  50 atm and 200 K. 
B)  0 atm and 200 K. 
C)  greater than 50 atm and greater than 200 K. 
D)  320 atm and 250 K. 
E)  200 atm and 400 K.

Question 9

Consider the following reaction:
Ni(CO)4(g) $f$
Ni(s)+ 4CO(g)
If the initial concentration of Ni(CO)4(g)
Is 1.0 M,
And x is the equilibrium concentration of CO(g),What is the correct equilibrium relation?

Accepted Answer

A)  Kc = X4/(1.0 F1F1F1S1-F1F1F10 4X) 
B)  Kc = X/(1.0 F1F1F1S1-F1F1F10 X/4) 
C)  Kc = X4/(1.0 F1F1F1S1-F1F1F10 X/4) 
D)  Kc = X5/(1.0 F1F1F1S1-F1F1F10 X/4) 
E)  Kc = 4X/(1.0 F1F1F1S1-F1F1F10 4X) 
A)  Kc = X4/(1.0 F1F1F1S1-F1F1F10 4X) 
B)  Kc = X/(1.0 F1F1F1S1-F1F1F10 X/4) 
C)  Kc = X4/(1.0 F1F1F1S1-F1F1F10 X/4) 
D)  Kc = X5/(1.0 F1F1F1S1-F1F1F10 X/4) 
E)  Kc = 4X/(1.0 F1F1F1S1-F1F1F10 4X)

Question 10

Why is the vapor pressure of cis-dibromoethene lower than the vapor pressure of trans-dibromoethene?

Accepted Answer

A)  Ion-dipole forces 
B)  London forces 
C)  Hydrogen bonding 
D)  Ion-ion forces 
E)  Dipole-dipole forces 
A)  Ion-dipole forces 
B)  London forces 
C)  Hydrogen bonding 
D)  Ion-ion forces 
E)  Dipole-dipole forces

Question 11

If the Ksp of AgI is 1.5 × 10F1F1F1S1-F1F1F1016 at 298 K, what is ?Gr° for the reaction of Ag+(aq)With IF1F1F1S1-F1F1F10(aq)Under standard conditions at 298 K.

Accepted Answer

A)  F1F1F1S1-F1F1F1090.3 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
B)  +90.3 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
C)  0 
D)  +7.57 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
E)  F1F1F1S1-F1F1F107.57 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
A)  F1F1F1S1-F1F1F1090.3 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
B)  +90.3 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
C)  0 
D)  +7.57 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101 
E)  F1F1F1S1-F1F1F107.57 kJF1F1F1S1.F1F1F10molF1F1F1S1-F1F1F101

The phase diagram for a pure compound is given below .All of the following could have a similar phase diagram except

How is a reaction quotient defined?

What is the highest temperature that the substance shown in the following phase diagram can exist as a liquid?

The osmotic pressure of 1.00 g of a polymer dissolved in benzene to give 200 mL of solution is 1.50 kPa at 25^$\omicron$C .Estimate the average molar mass of the polymer.The gas law constant is 0.0821 L.atm.mol^-¹.K^-¹.

From a plot of Gibbs free energy versus progress of reaction,the sign of $\Delta$ G_r at any point along the curve is given by the slope of the curve

The vapor pressure of water above 40 mL of water in a 100 mL container is 23.8 Torr at 25^$\omicron$C .What is the vapor pressure of the water if the volume of the container is changed to 50 mL?

The phase diagram for a pure compound is shown below .The triple point occurs at

Consider the following reaction: Ni(CO)₄(g) $f$ Ni(s)+ 4CO(g) If the initial concentration of Ni(CO)₄(g) Is 1.0 M, And x is the equilibrium concentration of CO(g),What is the correct equilibrium relation?

Why is the vapor pressure of cis-dibromoethene lower than the vapor pressure of trans-dibromoethene?

If the K_sp of AgI is 1.5 × 10^-¹⁶ at 298 K, what is ?G_r° for the reaction of Ag⁺(aq)With I^-(aq)Under standard conditions at 298 K.

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Exam 5: Equilibrium

The phase diagram for a pure compound is given below .All of the following could have a similar phase diagram except

How is a reaction quotient defined?

What is the highest temperature that the substance shown in the following phase diagram can exist as a liquid?

The osmotic pressure of 1.00 g of a polymer dissolved in benzene to give 200 mL of solution is 1.50 kPa at 25 ο\omicronο C .Estimate the average molar mass of the polymer.The gas law constant is 0.0821 L.atm.mol-1.K-1.

From a plot of Gibbs free energy versus progress of reaction,the sign of Δ\DeltaΔ Gr at any point along the curve is given by the slope of the curve

The vapor pressure of water above 40 mL of water in a 100 mL container is 23.8 Torr at 25 ο\omicronο C .What is the vapor pressure of the water if the volume of the container is changed to 50 mL?

The phase diagram for a pure compound is shown below .The triple point occurs at

Consider the following reaction: Ni(CO)4(g) fff Ni(s)+ 4CO(g) If the initial concentration of Ni(CO)4(g) Is 1.0 M, And x is the equilibrium concentration of CO(g),What is the correct equilibrium relation?

Why is the vapor pressure of cis-dibromoethene lower than the vapor pressure of trans-dibromoethene?

If the Ksp of AgI is 1.5 × 10-16 at 298 K, what is ?Gr° for the reaction of Ag+(aq)With I-(aq)Under standard conditions at 298 K.

Atoms

Molecules

States of Matter

Thermodynamics

Reactions

Kinetics

The Main-Group Elements

The D-Block Elements

Nuclear Chemistry

Organic Chemistry

Filters

The osmotic pressure of 1.00 g of a polymer dissolved in benzene to give 200 mL of solution is 1.50 kPa at 25^$\omicron$C .Estimate the average molar mass of the polymer.The gas law constant is 0.0821 L.atm.mol^-¹.K^-¹.

From a plot of Gibbs free energy versus progress of reaction,the sign of $\Delta$ G_r at any point along the curve is given by the slope of the curve

The vapor pressure of water above 40 mL of water in a 100 mL container is 23.8 Torr at 25^$\omicron$C .What is the vapor pressure of the water if the volume of the container is changed to 50 mL?

Consider the following reaction: Ni(CO)₄(g) $f$ Ni(s)+ 4CO(g) If the initial concentration of Ni(CO)₄(g) Is 1.0 M, And x is the equilibrium concentration of CO(g),What is the correct equilibrium relation?

If the K_sp of AgI is 1.5 × 10^-¹⁶ at 298 K, what is ?G_r° for the reaction of Ag⁺(aq)With I^-(aq)Under standard conditions at 298 K.