Consider the reaction 2SO3(g)$\rightarrow$2SO2(g)+ O2(g) Which statement is true for this reaction?

A) ($\Delta$S 0) C) ($\Delta$S = 0) D) (Smo = 0 for O2(g)) A) ($\Delta$S 0) C) ($\Delta$S = 0) D) (Smo = 0 for O2(g))

Consider the compounds PCl5(g),HCN(g),CuO(s),NO(g),NH3(g),and SO2(g). Which compound will become more stable with respect to its elements if the temperature is raised?

A) CuO(s) B) PCl5(g) C) NH3(g) D) NO(g) E) HCN(g) A) CuO(s) B) PCl5(g) C) NH3(g) D) NO(g) E) HCN(g)

For the reaction 2NH3(g)→ 3H2(g)+ N2(g),KP = 1.47 *10-6 at 298 K.Estimate the temperature at which KP = 0.0100.

The answer of For the reaction 2NH3(g)→ 3H2(g)+ N2(g),KP =...

Exam 9: Thermodynamics: The Second and Third Laws

Consider the following processes (treat all gases as ideal). 1.The pressure of 1 mole of oxygen gas is allowed to double isothermally. 2.Carbon dioxide is allowed to expand isothermally to 10 times its original volume. 3.The temperature of 1 mol of helium is increased 25°C at constant pressure. 4.Nitrogen gas is compressed isothermally to half its original volume. 5.A glass of water loses 100 J of energy reversibly at 30°C. Which of these processes lead(s) to an increase in entropy?

(Multiple Choice)

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Question 81

Consider the reaction 2SO₃(g) $\rightarrow$ 2SO₂(g)+ O₂(g) Which statement is true for this reaction?

(Multiple Choice)

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Question 82

Consider the compounds PCl₅(g),HCN(g),CuO(s),NO(g),NH₃(g),and SO₂(g). Which compound will become more stable with respect to its elements if the temperature is raised?

(Multiple Choice)

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Question 83

Predict the sign (+,-,0)of the entropy change when a glass of water reversibly loses 200 J of energy at 25°C.

(Short Answer)

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Question 84

The cooling of a hot metal is accompanied by an increase in entropy.

(True/False)

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Question 85

An example of a spontaneous process having $\Delta$ H ~ 0 is

(Multiple Choice)

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Question 86

Use tabulated thermodynamic data to estimate the temperature at which the vapor pressure of benzene is 1.33 kPa.Hint: Assume that the enthalpy and entropy of the reaction are independent of temperature.

(Short Answer)

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Question 87

Calculate the change in molar entropy when 2.00 mol of ozone are compressed isothermally to one quarter of its original volume.Treat ozone as an ideal gas.

(Multiple Choice)

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Question 88

All the halogens exist as diatomic molecules at room temperature and 1 bar.Under these conditions,which of the halogens,F to I,has the smallest molar entropy?

(Short Answer)

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Question 89

The reaction CH₃CH₂CH₂CH₃(g) $\rightarrow$ CH₃CH(CH₃)₂(g),is exothermic.This reaction will be spontaneous at high temperatures.

(True/False)

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Question 90

What is the change in entropy when the pressure of an ideal gas is increased at constant temperature? Choose from +,0,-.

(Short Answer)

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Question 91

For the reaction 2NH₃(g)→ 3H₂(g)+ N₂(g),K_P = 1.47 *10^-6 at 298 K.Estimate the temperature at which K_P = 0.0100.

(Short Answer)

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Question 92

The molar heat capacity of Cu(s)at 1 atm pressure has been measured over a range of temperatures from close to 0 K to 400 K.Describe how you would obtain the standard molar entropy of Cu(s)at 298 K.

(Essay)

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Question 93

Which of the following is true for a spontaneous reaction at constant temperature?

(Multiple Choice)

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Question 94

The dehydrogenation of cyclohexane,C₆H₁₂(l),to form benzene,C₆H₆(l),is not spontaneous.However,the hydrogenation of ethene to form ethane is spontaneous.Calculate the reaction free energy for the coupled reaction C₆H₁₂(l)+ 3CH₂=CH₂(g) $\rightarrow$ C₆H₆(l)+ CH₃CH₃(g)

(Short Answer)

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Question 95

Showing 81 - 95 of 95

Consider the reaction 2SO₃(g) $\rightarrow$ 2SO₂(g)+ O₂(g) Which statement is true for this reaction?

Consider the compounds PCl₅(g),HCN(g),CuO(s),NO(g),NH₃(g),and SO₂(g). Which compound will become more stable with respect to its elements if the temperature is raised?

Predict the sign (+,-,0)of the entropy change when a glass of water reversibly loses 200 J of energy at 25°C.

The cooling of a hot metal is accompanied by an increase in entropy.

An example of a spontaneous process having $\Delta$ H ~ 0 is

Use tabulated thermodynamic data to estimate the temperature at which the vapor pressure of benzene is 1.33 kPa.Hint: Assume that the enthalpy and entropy of the reaction are independent of temperature.

Calculate the change in molar entropy when 2.00 mol of ozone are compressed isothermally to one quarter of its original volume.Treat ozone as an ideal gas.

All the halogens exist as diatomic molecules at room temperature and 1 bar.Under these conditions,which of the halogens,F to I,has the smallest molar entropy?

The reaction CH₃CH₂CH₂CH₃(g) $\rightarrow$ CH₃CH(CH₃)₂(g),is exothermic.This reaction will be spontaneous at high temperatures.

What is the change in entropy when the pressure of an ideal gas is increased at constant temperature? Choose from +,0,-.

For the reaction 2NH₃(g)→ 3H₂(g)+ N₂(g),K_P = 1.47 *10^-6 at 298 K.Estimate the temperature at which K_P = 0.0100.

The molar heat capacity of Cu(s)at 1 atm pressure has been measured over a range of temperatures from close to 0 K to 400 K.Describe how you would obtain the standard molar entropy of Cu(s)at 298 K.

Which of the following is true for a spontaneous reaction at constant temperature?

The dehydrogenation of cyclohexane,C₆H₁₂(l),to form benzene,C₆H₆(l),is not spontaneous.However,the hydrogenation of ethene to form ethane is spontaneous.Calculate the reaction free energy for the coupled reaction C₆H₁₂(l)+ 3CH₂=CH₂(g) $\rightarrow$ C₆H₆(l)+ CH₃CH₃(g)

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Exam 9: Thermodynamics: The Second and Third Laws

Consider the reaction 2SO3(g) →\rightarrow→ 2SO2(g)+ O2(g) Which statement is true for this reaction?

Consider the compounds PCl5(g),HCN(g),CuO(s),NO(g),NH3(g),and SO2(g). Which compound will become more stable with respect to its elements if the temperature is raised?

Predict the sign (+,-,0)of the entropy change when a glass of water reversibly loses 200 J of energy at 25°C.

The cooling of a hot metal is accompanied by an increase in entropy.

An example of a spontaneous process having Δ\DeltaΔ H ~ 0 is

Use tabulated thermodynamic data to estimate the temperature at which the vapor pressure of benzene is 1.33 kPa.Hint: Assume that the enthalpy and entropy of the reaction are independent of temperature.

Calculate the change in molar entropy when 2.00 mol of ozone are compressed isothermally to one quarter of its original volume.Treat ozone as an ideal gas.

All the halogens exist as diatomic molecules at room temperature and 1 bar.Under these conditions,which of the halogens,F to I,has the smallest molar entropy?

The reaction CH3CH2CH2CH3(g) →\rightarrow→ CH3CH(CH3)2(g),is exothermic.This reaction will be spontaneous at high temperatures.

What is the change in entropy when the pressure of an ideal gas is increased at constant temperature? Choose from +,0,-.

For the reaction 2NH3(g)→ 3H2(g)+ N2(g),KP = 1.47 *10-6 at 298 K.Estimate the temperature at which KP = 0.0100.

The molar heat capacity of Cu(s)at 1 atm pressure has been measured over a range of temperatures from close to 0 K to 400 K.Describe how you would obtain the standard molar entropy of Cu(s)at 298 K.

Which of the following is true for a spontaneous reaction at constant temperature?

The dehydrogenation of cyclohexane,C6H12(l),to form benzene,C6H6(l),is not spontaneous.However,the hydrogenation of ethene to form ethane is spontaneous.Calculate the reaction free energy for the coupled reaction C6H12(l)+ 3CH2=CH2(g) →\rightarrow→ C6H6(l)+ CH3CH3(g)

The Quantum World

Quantum Mechanics in Action: Atoms

Chemical Bonds

Molecular Shape and Structure

The Properties of Gases

Liquids and Solids

Inorganic Materials

Thermodynamics: The First Law

Physical Equilibria

Chemical Equilibria

Acids and Bases

Aqueous Equilibria

Electrochemistry

Chemical Kinetics

The Elements: the Main Group Elements

The Elements: The D Block

Nuclear Chemistry

Organic Chemistry I

Organic Chemistry II

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Consider the reaction 2SO₃(g) $\rightarrow$ 2SO₂(g)+ O₂(g) Which statement is true for this reaction?

Consider the compounds PCl₅(g),HCN(g),CuO(s),NO(g),NH₃(g),and SO₂(g). Which compound will become more stable with respect to its elements if the temperature is raised?

An example of a spontaneous process having $\Delta$ H ~ 0 is

The reaction CH₃CH₂CH₂CH₃(g) $\rightarrow$ CH₃CH(CH₃)₂(g),is exothermic.This reaction will be spontaneous at high temperatures.

For the reaction 2NH₃(g)→ 3H₂(g)+ N₂(g),K_P = 1.47 *10^-6 at 298 K.Estimate the temperature at which K_P = 0.0100.

The dehydrogenation of cyclohexane,C₆H₁₂(l),to form benzene,C₆H₆(l),is not spontaneous.However,the hydrogenation of ethene to form ethane is spontaneous.Calculate the reaction free energy for the coupled reaction C₆H₁₂(l)+ 3CH₂=CH₂(g) $\rightarrow$ C₆H₆(l)+ CH₃CH₃(g)