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Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25°C. Substance AH (kJ/mol) Substance AH (kJ/mol) Substance AH (kJ/mol) Al(g) HCl(aq) NF3 (8) Al2O3(s) Cr(g) NH3(g) F(g) C(g) CH4 (g) C₂H₂(g) 330.0 -1675.7 716.7 -74.6 227.4 HF (g) HF (aq) -167.2 396.6 79.38 -273.3 -335.0 NH3(aq) O(g) 03(g) -132.1 -45.9 -80.29 249.2 142.7

Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25°C. Substance AH (kJ/mol) Substance AH (kJ/mol) Substance AH (kJ/mol) Al(g) HCl(aq) NF3 (8) Al2O3(s) Cr(g) NH3(g) F(g) C(g) CH4 (g) C₂H₂(g) 330.0 -1675.7 716.7 -74.6 227.4 HF (g) HF (aq) -167.2 396.6 79.38 -273.3 -335.0 NH3(aq) O(g) 03(g) -132.1 -45.9 -80.29 249.2 142.7

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter10: Entropy And The Second Law Of Thermodynamics
Section: Chapter Questions
Problem 10.79PAE: The molecular scale pictures below show snapshots of a strong acid at three different instants after...
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Please answer part B and part F.
MISSED THIS? Watch KCV 9.10, IWE 9.11; Read Section 9.10. You can click on the Review link to access the section in your e Text. Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25 °C. Substance AH (kJ/mol) Substance AH (kJ/mol) Substance AH; (kJ/mol) Al(g) HCl(aq) NF3 (g) Al2O3(s) Cr(g) NH3(g) F(g) NH3(aq) C(g) CH4 (g) C₂H₂(g) C₂H4 (g) C2H6 (g) CO(g) CO₂(g) Cl(g) HCl(g) 330.0 -1675.7 716.7 -74.6 227.4 52.4 -84.68 -110.5 -393.5 121.3 -92.3 HF (g) HF (aq) H(g) Fe(g) FeO(s) Fe₂O3(s) Fe3O4(s) N(g) -167.2 396.6 79.38 -273.3 -335.0 218.0 416.3 -272.0 -824.2 -1118.4 472.7 O(g) 03(g) S(g) SO₂(g) SO3(g) Sn(g) SnO(s) SnO₂ (s) -132.1 -45.9 -80.29 249.2 142.7 277.2 -296.8 -395.7 301.2 -280.7 -577.6 ▼ Part F Find AH for Cr2O3 (s) from the given table. Express your answer in kilojoules per mole to one decimal place. ΔΗ 2Cr(s) + O2(g) → Cr2O3 (8) VO ΑΣΦ Submit Previous Answers Request Answer Part G X Incorrect; Try Again; 5 attempts remaining ? kJ/mol Enter an equation for the formation of C₂ H₂(g) from its elements in their
Transcribed Image Text:MISSED THIS? Watch KCV 9.10, IWE 9.11; Read Section 9.10. You can click on the Review link to access the section in your e Text. Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25 °C. Substance AH (kJ/mol) Substance AH (kJ/mol) Substance AH; (kJ/mol) Al(g) HCl(aq) NF3 (g) Al2O3(s) Cr(g) NH3(g) F(g) NH3(aq) C(g) CH4 (g) C₂H₂(g) C₂H4 (g) C2H6 (g) CO(g) CO₂(g) Cl(g) HCl(g) 330.0 -1675.7 716.7 -74.6 227.4 52.4 -84.68 -110.5 -393.5 121.3 -92.3 HF (g) HF (aq) H(g) Fe(g) FeO(s) Fe₂O3(s) Fe3O4(s) N(g) -167.2 396.6 79.38 -273.3 -335.0 218.0 416.3 -272.0 -824.2 -1118.4 472.7 O(g) 03(g) S(g) SO₂(g) SO3(g) Sn(g) SnO(s) SnO₂ (s) -132.1 -45.9 -80.29 249.2 142.7 277.2 -296.8 -395.7 301.2 -280.7 -577.6 ▼ Part F Find AH for Cr2O3 (s) from the given table. Express your answer in kilojoules per mole to one decimal place. ΔΗ 2Cr(s) + O2(g) → Cr2O3 (8) VO ΑΣΦ Submit Previous Answers Request Answer Part G X Incorrect; Try Again; 5 attempts remaining ? kJ/mol Enter an equation for the formation of C₂ H₂(g) from its elements in their
MISSED THIS? Watch KCV 9.10, IWE 9.11; Read Section 9.10. You can click on the Review link to access the section in your eText. Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25 °C. Substance AH (kJ/mol) Substance AH (kJ/mol) Substance AH (kJ/mol) Al(g) NF3(g) HCl(aq) Cr(g) Al2O3(s) NH3(g) F(g) C(g) CH₁ (g) C₂ H₂ (8) C₂H4 (g) C₂H6 (g) CO(g) CO₂(g) Cl(g) HCl(g) 330.0 -1675.7 716.7 -74.6 227.4 52.4 -84.68 -110.5 -393.5 121.3 -92.3 HF (g) HF (aq) H(g) Fe(g) FeO(s) Fe2O3(s) Fe3O4(s) N(g) -167.2 396.6 79.38 -273.3 -335.0 218.0 416.3 -272.0 -824.2 -1118.4 472.7 NH3(aq) O(g) 03(g) S(g) SO₂(g) SO3(g) Sn(g) SnO(s) SnO₂ (s) -132.1 -45.9 -80.29 249.2 142.7 277.2 -296.8 -395.7 301.2 -280.7 -577.6 Submit ▼ Part B Previous Answers ✔Correct HF (g) is composed of elements H and F. In their standard states, these elements exist as diatomic molecules in the gas phase. Thus, the formation of 1 mol of HF(g) is expressed by the following chemical equation: F2 (g) + H₂(g) → HF (g) Review | Constants I Periodic Table Find AH; for HF (g) from the given table. Express your answer in kilojoules per mole to one decimal place. 箔 VO ΑΣΦ ΔΗ; 227.4 = Submit Prev Answers Request Answer ? kJ/mol
Transcribed Image Text:MISSED THIS? Watch KCV 9.10, IWE 9.11; Read Section 9.10. You can click on the Review link to access the section in your eText. Consider the table of Standard Thermodynamic Quantities for Selected Substances at 25 °C. Substance AH (kJ/mol) Substance AH (kJ/mol) Substance AH (kJ/mol) Al(g) NF3(g) HCl(aq) Cr(g) Al2O3(s) NH3(g) F(g) C(g) CH₁ (g) C₂ H₂ (8) C₂H4 (g) C₂H6 (g) CO(g) CO₂(g) Cl(g) HCl(g) 330.0 -1675.7 716.7 -74.6 227.4 52.4 -84.68 -110.5 -393.5 121.3 -92.3 HF (g) HF (aq) H(g) Fe(g) FeO(s) Fe2O3(s) Fe3O4(s) N(g) -167.2 396.6 79.38 -273.3 -335.0 218.0 416.3 -272.0 -824.2 -1118.4 472.7 NH3(aq) O(g) 03(g) S(g) SO₂(g) SO3(g) Sn(g) SnO(s) SnO₂ (s) -132.1 -45.9 -80.29 249.2 142.7 277.2 -296.8 -395.7 301.2 -280.7 -577.6 Submit ▼ Part B Previous Answers ✔Correct HF (g) is composed of elements H and F. In their standard states, these elements exist as diatomic molecules in the gas phase. Thus, the formation of 1 mol of HF(g) is expressed by the following chemical equation: F2 (g) + H₂(g) → HF (g) Review | Constants I Periodic Table Find AH; for HF (g) from the given table. Express your answer in kilojoules per mole to one decimal place. 箔 VO ΑΣΦ ΔΗ; 227.4 = Submit Prev Answers Request Answer ? kJ/mol
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