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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please answer part B and part F.
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
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Part G
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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 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
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▼ 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
=
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