Reactivity 1.4.1—Entropy, S, is a measure of the dispersal or distribution of matter and/or energy in a system. The more ways the energy can be distributed, the higher the entropy. Under the same conditions, the entropy of a gas is greater than that of a liquid, which in turn is greater than that of a solid. Predict whether a physical or chemical change will result in an increase or decrease in entropy of a system. Calculate standard entropy changes, ΔS⦵, from standard entropy values, S⦵.
Description
[N/A]Directly related questions
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22N.1A.HL.TZ0.16:
Which alkane has the lowest standard entropy, S⦵?
A. CH4 (g)B. C2H6 (g)
C. C3H8 (g)
D. C4H10 (g)
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22N.1A.HL.TZ0.16:
Which alkane has the lowest standard entropy, S⦵?
A. CH4 (g)B. C2H6 (g)
C. C3H8 (g)
D. C4H10 (g)
- 22N.1A.SL.TZ0.17: Which changes would increase the rate of an exothermic reaction?
- 22N.1A.SL.TZ0.17: Which changes would increase the rate of an exothermic reaction?
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19M.1A.HL.TZ2.17:
Which change has the greatest increase in entropy?
A. CO2 (s) → CO2 (g)
B. CO2 (g) → CO2 (l)
C. CO2 (g) → CO2 (s)
D. CO2 (l) → CO2 (s)
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19M.1A.HL.TZ2.17:
Which change has the greatest increase in entropy?
A. CO2 (s) → CO2 (g)
B. CO2 (g) → CO2 (l)
C. CO2 (g) → CO2 (s)
D. CO2 (l) → CO2 (s)
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19M.1A.HL.TZ2.17:
Which change has the greatest increase in entropy?
A. CO2 (s) → CO2 (g)
B. CO2 (g) → CO2 (l)
C. CO2 (g) → CO2 (s)
D. CO2 (l) → CO2 (s)
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19M.1A.HL.TZ2.17:
Which change has the greatest increase in entropy?
A. CO2 (s) → CO2 (g)
B. CO2 (g) → CO2 (l)
C. CO2 (g) → CO2 (s)
D. CO2 (l) → CO2 (s)
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19M.2.HL.TZ1.7a:
Explain how entropy affects this equilibrium.
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19M.2.HL.TZ1.a:
Explain how entropy affects this equilibrium.
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19M.2.HL.TZ1.7a:
Explain how entropy affects this equilibrium.
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19M.2.HL.TZ1.a:
Explain how entropy affects this equilibrium.
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19N.1A.HL.TZ0.17:
Which reaction has the greatest increase in entropy of the system?
A. HCl (g) + NH3 (g) → NH4Cl (s)
B. (NH4)2Cr2O7 (s) → Cr2O3 (s) + N2 (g) + 4H2O (g)
C. CaCO3 (s) → CaO (s) + CO2 (g)
D. I2 (g) → I2 (s)
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19N.1A.HL.TZ0.17:
Which reaction has the greatest increase in entropy of the system?
A. HCl (g) + NH3 (g) → NH4Cl (s)
B. (NH4)2Cr2O7 (s) → Cr2O3 (s) + N2 (g) + 4H2O (g)
C. CaCO3 (s) → CaO (s) + CO2 (g)
D. I2 (g) → I2 (s)
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19N.1A.HL.TZ0.17:
Which reaction has the greatest increase in entropy of the system?
A. HCl (g) + NH3 (g) → NH4Cl (s)
B. (NH4)2Cr2O7 (s) → Cr2O3 (s) + N2 (g) + 4H2O (g)
C. CaCO3 (s) → CaO (s) + CO2 (g)
D. I2 (g) → I2 (s)
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19N.1A.HL.TZ0.17:
Which reaction has the greatest increase in entropy of the system?
A. HCl (g) + NH3 (g) → NH4Cl (s)
B. (NH4)2Cr2O7 (s) → Cr2O3 (s) + N2 (g) + 4H2O (g)
C. CaCO3 (s) → CaO (s) + CO2 (g)
D. I2 (g) → I2 (s)
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21M.1A.HL.TZ2.17:
Which change results in the largest negative value of ΔS?
A. C2H5OH (l) + SOCl2 (l) → C2H5Cl (l) + SO2 (g) + HCl (g)
B. CaCO3 (s) → CaO (s) + CO2 (g)
C. H2O (l) → H2O (s)
D. NH3 (g) + HCl (g) → NH4Cl (s)
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21M.1A.HL.TZ2.17:
Which change results in the largest negative value of ΔS?
A. C2H5OH (l) + SOCl2 (l) → C2H5Cl (l) + SO2 (g) + HCl (g)
B. CaCO3 (s) → CaO (s) + CO2 (g)
C. H2O (l) → H2O (s)
D. NH3 (g) + HCl (g) → NH4Cl (s)
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21M.1A.HL.TZ2.17:
Which change results in the largest negative value of ΔS?
A. C2H5OH (l) + SOCl2 (l) → C2H5Cl (l) + SO2 (g) + HCl (g)
B. CaCO3 (s) → CaO (s) + CO2 (g)
C. H2O (l) → H2O (s)
D. NH3 (g) + HCl (g) → NH4Cl (s)
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21M.1A.HL.TZ2.17:
Which change results in the largest negative value of ΔS?
A. C2H5OH (l) + SOCl2 (l) → C2H5Cl (l) + SO2 (g) + HCl (g)
B. CaCO3 (s) → CaO (s) + CO2 (g)
C. H2O (l) → H2O (s)
D. NH3 (g) + HCl (g) → NH4Cl (s)
- 21N.1A.HL.TZ0.17: In which of the following situations is the forward reaction spontaneous? A. The equilibrium...
- 21N.1A.HL.TZ0.17: In which of the following situations is the forward reaction spontaneous? A. The equilibrium...
- 21N.1A.HL.TZ0.17: In which of the following situations is the forward reaction spontaneous? A. The equilibrium...
- 21N.1A.HL.TZ0.17: In which of the following situations is the forward reaction spontaneous? A. The equilibrium...
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21N.2.HL.TZ0.3c(ii):
Calculate the entropy change, ΔS, in J K−1 mol−1, for this reaction.
Chemistry 2e, Chpt. 21 Nuclear Chemistry, Appendix G: Standard Thermodynamic Properties for Selected Substances https://openstax.org/books/chemistry-2e/pages/g-standard-thermodynamic-properties-for- selectedsubstances# page_667adccf-f900-4d86-a13d-409c014086ea © 1999-2021, Rice University. Except where otherwise noted, textbooks on this site are licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.
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21N.2.HL.TZ0.3c(ii):
Calculate the entropy change, ΔS, in J K−1 mol−1, for this reaction.
Chemistry 2e, Chpt. 21 Nuclear Chemistry, Appendix G: Standard Thermodynamic Properties for Selected Substances https://openstax.org/books/chemistry-2e/pages/g-standard-thermodynamic-properties-for- selectedsubstances# page_667adccf-f900-4d86-a13d-409c014086ea © 1999-2021, Rice University. Except where otherwise noted, textbooks on this site are licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.
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21N.2.HL.TZ0.c(ii):
Calculate the entropy change, ΔS, in J K−1 mol−1, for this reaction.
Chemistry 2e, Chpt. 21 Nuclear Chemistry, Appendix G: Standard Thermodynamic Properties for Selected Substances https://openstax.org/books/chemistry-2e/pages/g-standard-thermodynamic-properties-for- selectedsubstances# page_667adccf-f900-4d86-a13d-409c014086ea © 1999-2021, Rice University. Except where otherwise noted, textbooks on this site are licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.
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21N.2.HL.TZ0.3c(ii):
Calculate the entropy change, ΔS, in J K−1 mol−1, for this reaction.
Chemistry 2e, Chpt. 21 Nuclear Chemistry, Appendix G: Standard Thermodynamic Properties for Selected Substances https://openstax.org/books/chemistry-2e/pages/g-standard-thermodynamic-properties-for- selectedsubstances# page_667adccf-f900-4d86-a13d-409c014086ea © 1999-2021, Rice University. Except where otherwise noted, textbooks on this site are licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.
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21N.2.HL.TZ0.3c(ii):
Calculate the entropy change, ΔS, in J K−1 mol−1, for this reaction.
Chemistry 2e, Chpt. 21 Nuclear Chemistry, Appendix G: Standard Thermodynamic Properties for Selected Substances https://openstax.org/books/chemistry-2e/pages/g-standard-thermodynamic-properties-for- selectedsubstances# page_667adccf-f900-4d86-a13d-409c014086ea © 1999-2021, Rice University. Except where otherwise noted, textbooks on this site are licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.
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21N.2.HL.TZ0.c(ii):
Calculate the entropy change, ΔS, in J K−1 mol−1, for this reaction.
Chemistry 2e, Chpt. 21 Nuclear Chemistry, Appendix G: Standard Thermodynamic Properties for Selected Substances https://openstax.org/books/chemistry-2e/pages/g-standard-thermodynamic-properties-for- selectedsubstances# page_667adccf-f900-4d86-a13d-409c014086ea © 1999-2021, Rice University. Except where otherwise noted, textbooks on this site are licensed under a Creative Commons Attribution 4.0 International License. (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/.
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22M.1A.HL.TZ1.17:
In which reaction does entropy decrease?
A. NaCl (s) → NaCl (aq)
B. Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
C. NH3 (g) + HCl (g) → NH4Cl (s)
D. CuCO3 (s) → CuO (s) + CO2 (g)
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22M.1A.HL.TZ1.17:
In which reaction does entropy decrease?
A. NaCl (s) → NaCl (aq)
B. Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
C. NH3 (g) + HCl (g) → NH4Cl (s)
D. CuCO3 (s) → CuO (s) + CO2 (g)
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22M.1A.HL.TZ1.17:
In which reaction does entropy decrease?
A. NaCl (s) → NaCl (aq)
B. Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
C. NH3 (g) + HCl (g) → NH4Cl (s)
D. CuCO3 (s) → CuO (s) + CO2 (g)
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22M.1A.HL.TZ1.17:
In which reaction does entropy decrease?
A. NaCl (s) → NaCl (aq)
B. Zn (s) + H2SO4 (aq) → ZnSO4 (aq) + H2 (g)
C. NH3 (g) + HCl (g) → NH4Cl (s)
D. CuCO3 (s) → CuO (s) + CO2 (g)
- 22M.2.HL.TZ1.3c(iv): Outline, with reference to the reaction equation, why this sign for the entropy change is expected.
- 22M.2.HL.TZ1.3c(iv): Outline, with reference to the reaction equation, why this sign for the entropy change is expected.
- 22M.2.HL.TZ1.c(iv): Outline, with reference to the reaction equation, why this sign for the entropy change is expected.
- 22M.2.HL.TZ1.3c(iv): Outline, with reference to the reaction equation, why this sign for the entropy change is expected.
- 22M.2.HL.TZ1.3c(iv): Outline, with reference to the reaction equation, why this sign for the entropy change is expected.
- 22M.2.HL.TZ1.c(iv): Outline, with reference to the reaction equation, why this sign for the entropy change is expected.
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22M.2.HL.TZ2.4d(i):
Calculate the entropy change of reaction, ΔS⦵, in J K−1 mol−1.
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22M.2.HL.TZ2.4d(i):
Calculate the entropy change of reaction, ΔS⦵, in J K−1 mol−1.
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22M.2.HL.TZ2.d(i):
Calculate the entropy change of reaction, ΔS⦵, in J K−1 mol−1.
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22M.2.HL.TZ2.4d(i):
Calculate the entropy change of reaction, ΔS⦵, in J K−1 mol−1.
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22M.2.HL.TZ2.4d(i):
Calculate the entropy change of reaction, ΔS⦵, in J K−1 mol−1.
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22M.2.HL.TZ2.d(i):
Calculate the entropy change of reaction, ΔS⦵, in J K−1 mol−1.
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22N.1A.HL.TZ0.16:
Which alkane has the lowest standard entropy, S⦵?
A. CH4 (g)B. C2H6 (g)
C. C3H8 (g)
D. C4H10 (g)
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22N.1A.HL.TZ0.16:
Which alkane has the lowest standard entropy, S⦵?
A. CH4 (g)B. C2H6 (g)
C. C3H8 (g)
D. C4H10 (g)