Hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water. If F1F1F1S1F1F1F10H° = -56.13 kJ/mol and F1F1F1S1F1F1F10S° = 79.11 J/mol · K, what is F1F1F1S1F1F1F10G° for this reaction at 20°C?

A) -79.31 kJ/mol B) -77.73 kJ/mol C) -2.324 F1F1F1S1F1F1F10 104 kJ/mol D) 79.31 kJ/mol E) -1638 kJ/mol A) -79.31 kJ/mol B) -77.73 kJ/mol C) -2.324 F1F1F1S1F1F1F10 104 kJ/mol D) 79.31 kJ/mol E) -1638 kJ/mol

The entropy change of the surroundings, F1F1F1S1F1F1F10Ssurr, is related to heat transfer q with respect to the system and temperature T by __________

A) -q/Tsys = F1F1F1S1F1F1F10Ssurr. B) +q/Tsys = F1F1F1S1F1F1F10Ssurr. C) -q/Tsurr = F1F1F1S1F1F1F10Ssurr. D) q/Tsurr = F1F1F1S1F1F1F10Ssurr. E) None of these, unless the system undergoes a reversible process. A) -q/Tsys = F1F1F1S1F1F1F10Ssurr. B) +q/Tsys = F1F1F1S1F1F1F10Ssurr. C) -q/Tsurr = F1F1F1S1F1F1F10Ssurr. D) q/Tsurr = F1F1F1S1F1F1F10Ssurr. E) None of these, unless the system undergoes a reversible process.

Indicate which one of the following reactions result in a positive F1F1F1S1F1F1F10Ssys.

A) AgNO3(aq) + NaCl(aq) F3S3S3W1F1F1F10 AgCl(s) + NaNO3(aq) B) HCl(g) + H2O( ) F3S3S3W1F1F1F10 HCl(aq) C) H2(g) + I2(g) F3S3S3W1F1F1F10 2 Hl(g) D) C2H2O2(g) F3S3S3W1F1F1F10 2 CO(g) + H2(g) E) H2O(g) F3S3S3W1F1F1F10 H2O(l) A) AgNO3(aq) + NaCl(aq) F3S3S3W1F1F1F10 AgCl(s) + NaNO3(aq) B) HCl(g) + H2O( ) F3S3S3W1F1F1F10 HCl(aq) C) H2(g) + I2(g) F3S3S3W1F1F1F10 2 Hl(g) D) C2H2O2(g) F3S3S3W1F1F1F10 2 CO(g) + H2(g) E) H2O(g) F3S3S3W1F1F1F10 H2O(l)

Dinitrogen tetroxide (N2O4) decomposes to nitrogen dioxide (NO2). If F1F1F1S1F1F1F10H° = 58.02 kJ/mol and F1F1F1S1F1F1F10S° = 176.1 J/mol · K, at what temperature are reactants and products in their standard states at equilibrium?

A) +56.5°C B) +329.5°C C) -272.7°C D) +25.0°C E) +98.3°C A) +56.5°C B) +329.5°C C) -272.7°C D) +25.0°C E) +98.3°C

If a reaction A F1F1F1S1F1F1F10 B has F1F1F1S1F1F1F10G > 0, then when the reaction is at equilibrium there will be __________

A) absolutely no B that is formed. B) smaller quantities of B and larger quantities of A. C) equal quantities of A and B. D) large quantities of B and smaller quantities of A. E) absolutely no A remaining. A) absolutely no B that is formed. B) smaller quantities of B and larger quantities of A. C) equal quantities of A and B. D) large quantities of B and smaller quantities of A. E) absolutely no A remaining.

Determine the normal melting point of benzoic acid in degrees centigrade given the following data. F1F1F1S1F1F1F10H = 18.02 kJ/mol F1F1F1S1F1F1F10S = 45.56 J/mol · K

The answer of Determine the normal melting point of benzoic...

The symbol F1F1F1S1F1F1F10G (CH4, g) refers to which of the following reactions?

A) CH4(l) F1F1F1S1F1F1F10 CH4(g) B) CH4(g) F1F1F1S1F1F1F10 CH4( ) C) CH4(g) F1F1F1S1F1F1F10 C(g) + 4H(g) D) C(g) + 4H(g) F1F1F1S1F1F1F10 CH4(g) E) C(s, graphite) + 2H2(g) F1F1F1S1F1F1F10 CH4(g) A) CH4(l) F1F1F1S1F1F1F10 CH4(g) B) CH4(g) F1F1F1S1F1F1F10 CH4( ) C) CH4(g) F1F1F1S1F1F1F10 C(g) + 4H(g) D) C(g) + 4H(g) F1F1F1S1F1F1F10 CH4(g) E) C(s, graphite) + 2H2(g) F1F1F1S1F1F1F10 CH4(g)

Exam 14: Thermodynamics: Spontaneous Processes, Entropy, and Free Energy

Hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water. If H° = -56.13 kJ/mol and S° = 79.11 J/mol · K, what is G° for this reaction at 20°C?

(Multiple Choice)

(Multiple Choice)

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Question 31

Which of the following processes will lead to a decrease in the entropy of the system?

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Question 32

In a spontaneous process, which of the following always increases?

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Question 33

The entropy of vaporization of water is 109.0 J/mol · K. What is the enthalpy of vaporization of water at its normal boiling point?

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Question 34

"S_sys" can be directly related to the heat q. Which of A-D is not true regarding this relationship? If all are true, select E.

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Question 35

Determine the normal melting point of benzoic acid in degrees centigrade given the following data. H = 18.02 kJ/mol S = 45.56 J/mol · K

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Question 36

The enthalpy of fusion for benzene is 127.40 kJ/kg, and its melting point is 5.5°C. What is the entropy change when 1 mole of benzene melts at 5.5°C?

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Question 37

The heat of fusion for water is 333.6 J/g. What is the entropy change for the universe when 1.00 L of water at 0°C freezes at +5°C? Comment on the sign.

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Question 38

A reaction with a low enthalpy of reaction value is not spontaneous at low temperature but becomes spontaneous at high temperature. What are the signs for H° and S°, respectively?

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Question 39

The symbol G (CH₄, g) refers to which of the following reactions?

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Question 40

Showing 21 - 40 of 79

Exam 14: Thermodynamics: Spontaneous Processes, Entropy, and Free Energy

Hydrochloric acid (HCl) reacts with sodium hydroxide (NaOH) to form sodium chloride (NaCl) and water. If H° = -56.13 kJ/mol and S° = 79.11 J/mol · K, what is G° for this reaction at 20°C?

The dissolution of ammonium nitrate in water is a spontaneous endothermic process. It is spontaneous because the system undergoes __________

The entropy change of the surroundings, Ssurr, is related to heat transfer q with respect to the system and temperature T by __________

Indicate which one of the following reactions result in a positive Ssys.

The heat of fusion for water is 333.6 J/g. What is the entropy change for the universe when 1.00 L of water at 0°C freezes at -5°C? Comment on the sign.

Dinitrogen tetroxide (N2O4) decomposes to nitrogen dioxide (NO2). If H° = 58.02 kJ/mol and S° = 176.1 J/mol · K, at what temperature are reactants and products in their standard states at equilibrium?

In a spontaneous process, the entropy of the universe ___________

A reaction is at equilibrium at a given temperature and constant pressure when __________

At 0 K, the entropy of a perfect crystal is ___________

If a reaction A  B has G > 0, then when the reaction is at equilibrium there will be __________

Which of the following processes will lead to a decrease in the entropy of the system?

In a spontaneous process, which of the following always increases?

The entropy of vaporization of water is 109.0 J/mol · K. What is the enthalpy of vaporization of water at its normal boiling point?

"Ssys" can be directly related to the heat q. Which of A-D is not true regarding this relationship? If all are true, select E.

Determine the normal melting point of benzoic acid in degrees centigrade given the following data. H = 18.02 kJ/mol S = 45.56 J/mol · K

The enthalpy of fusion for benzene is 127.40 kJ/kg, and its melting point is 5.5°C. What is the entropy change when 1 mole of benzene melts at 5.5°C?

The heat of fusion for water is 333.6 J/g. What is the entropy change for the universe when 1.00 L of water at 0°C freezes at +5°C? Comment on the sign.

A reaction with a low enthalpy of reaction value is not spontaneous at low temperature but becomes spontaneous at high temperature. What are the signs for H° and S°, respectively?

The symbol G (CH4, g) refers to which of the following reactions?

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The entropy change of the surroundings, S_surr, is related to heat transfer q with respect to the system and temperature T by __________

Indicate which one of the following reactions result in a positive S_sys.

Dinitrogen tetroxide (N₂O₄) decomposes to nitrogen dioxide (NO₂). If H° = 58.02 kJ/mol and S° = 176.1 J/mol · K, at what temperature are reactants and products in their standard states at equilibrium?

"S_sys" can be directly related to the heat q. Which of A-D is not true regarding this relationship? If all are true, select E.

The symbol G (CH₄, g) refers to which of the following reactions?