Homework Answers
Given:
Hof(O2(g)) = 0.0 KJ/mol
Hof(O3(g)) = 142.3 KJ/mol
Balanced chemical equation is:
3 O2(g) ---> 2 O3(g)
ΔHo rxn = 2*Hof(O3(g)) - 3*Hof( O2(g))
ΔHo rxn = 2*(142.3) - 3*(0.0)
ΔHo rxn = 284.6 KJ
Given:
Sof(O2(g)) = 205.0 J/mol.K
Sof(O3(g)) = 237.6 J/mol.K
Balanced chemical equation is:
3 O2(g) ---> 2 O3(g)
ΔSo rxn = 2*Sof(O3(g)) - 3*Sof( O2(g))
ΔSo rxn = 2*(237.6) - 3*(205.0)
ΔSo rxn = -139.8 J/K
ΔHo = 284.6 KJ/mol
ΔSo = -139.8 J/mol.K
= -0.1398 KJ/mol.K
T = 2000 K
use:
ΔGo = ΔHo - T*ΔSo
ΔGo = 284.6 - 2000.0 * -0.1398
ΔGo = 564.2 KJ/mol
We have:
T = 2000 K
ΔGo = 564.2 KJ/mol
ΔGo = 564200 J/mol
use:
ΔGo = -R*T*ln Kc
564200 = - 8.314*2000.0* ln(Kc)
ln Kc = -33.9307
Kc = 1.84*10^-15
Answer: 1.84*10^-15
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step by step please 1/1 pts Question 12 Thermodynamic Quantities for Selected Substances at 298.15 K...
step by step please
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Use the data found in the Thermodynamic Values link under Reference Materials to calculate ΔHo (KJ),...
Use the data found in the Thermodynamic Values
link under Reference Materials to calculate
ΔHo (KJ), ΔSo (J/K) and
ΔGo(KJ) and ΔGo from the
equation ΔGo ≈ ΔHo - TΔSo
at 25.0 oC for
1. 1
C2H5OH(g) + ___ O2
(g) → ___ CO2 (g) + ___
H2O (g) (Do not change
a coefficient that is shown)
2. 2 C4H10 (l) + ___
O2 (g) → ___ CO2 (g) +
___ H2O (g) (Do not
change a coefficient that is shown)
3. C2H5OH
(l) → C2H4
(g) + H2O
(g) ...
Use the data found in the Thermodynamic Values link under Reference Materials to calculate ΔHo (KJ),...
Use the data found in the Thermodynamic Values
link under Reference Materials to calculate
ΔHo (KJ), ΔSo (J/K) and
ΔGo(KJ) and ΔGo from the
equation ΔGo ≈ ΔHo - TΔSo
at 25.0 oC for
1. C2H5OH
(g) → C2H4
(g) + H2O (l)
2. 2 C4H10
(l) + ___ O2 (g) → ___
CO2 (g) + ___ H2O
(l) (Do not change a coefficient
that is shown)
3. 2 C4H10 (g) + ___ O2
(g) → ___ CO2 (g) + ___
H2O (l) (Do not change
a coefficient that...
Using the equation and thermodynamic data: CO(g) + O2(g) --> CO2(g) (unbalanced) AH(rxn) = -566.0 kJ...
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Calculate AG for the following reaction at 25°C. 2 Ca(s) + O2(g) → 2 Ca(s) (J/K mol) Substance AH (kJ/mol AG (kJ/mol) Ca(s) Ca2+(aq) CaO(s) Ca(OH)2(5) CaF2(5) CaCl(s) O(g) 028) O3(aq) Oz(8) -542.96 -635.6 -986.6 -1,214.6 -794.96 249.4 -553.0 -604.2 -896.8 -1,161.9 -750.19 230.1 41.6 -55.2 39.8 83.4 68.87 113.8 160.95 205.0 110.88 237.6 -12.09 142.2 16.3 163.4
step by step please
1/1 pts Question 12 Thermodynamic Quantities for Selected Substances at 298.15 K (25°C) Substance ΔΗ°F (kJ/mol) AGOF (kJ/mol S (J/K- mol) 1.88 2.84 2.43 5.69 C (s, diamond) C(s. graphite) C2H2(g) C2H4 (8) C2H6 (g) CO(g) CO2 (g) H2(g) O2(g) H2O(0) 226.7 52.30 -84.68 -110.5 -393.5 0 0 -285.83 209.2 200.8 68.11 219.4 -32.89 229.5 -137.2 197.9 -394.4 213.6 0 130.58 0 205.0 -237.13 69.91 The value of AH°for the catalytic hydrogenation of acetylene to ethane,...
CO(g) + O2(g) -> CO2(g) (unbalanced) Using the equation and thermodynamic data: AH(rxn) --566.0 kJ (for the balanced equation) Substance sºu/mol*K) O2(g) 205.0 CO(g) 197.7 CO2(g) 213.8 NOTE: Write all answers to four significant figures. a. What is the Assys(J/mol*K) - b. What is the Assurr(J/mol*K) = c. What is the Asuniv(J/mol*K) - d. At what temperature(°C) will the reaction go from spontaneous to non-spontaneous?
3 attempts left Check my work Enter your answer in the provided box. Calculate AG for the reaction at 25°C. 2C6H61) + 1502(8) 12C028) + 6H20(1) agº = kJ AH° (kJ/mol Agº (kJ/mol) sº (J/K mol) 5.69 2.4 Substance C(graphite) C(diamond) CO(g) CO2(g) CO2(aq) C0,- (aq) O(g) O2(8) O3(aq) O3(8) H20(1) CH 1.90 -110.5 -393.5 -412.9 -676.3 249.4 2.87 --137.3 -394.4 -386.2 --528.1 230.1 0 16.3 163.4 -237.2 124.5 197.9 213.6 121.3 -53.1 160.95 205.0 110.88 237.6 -12.09 142.2 -285.8...
Use the data found in the Thermodynamic Values
link under Reference Materials to calculate
ΔHo (KJ), ΔSo (J/K) and
ΔGo(KJ) and ΔGo from the
equation ΔGo ≈ ΔHo - TΔSo
at 25.0 oC for
1. 1
C2H5OH(g) + ___ O2
(g) → ___ CO2 (g) + ___
H2O (g) (Do not change
a coefficient that is shown)
2. 2 C4H10 (l) + ___
O2 (g) → ___ CO2 (g) +
___ H2O (g) (Do not
change a coefficient that is shown)
3. C2H5OH
(l) → C2H4
(g) + H2O
(g) ...
Use the data found in the Thermodynamic Values
link under Reference Materials to calculate
ΔHo (KJ), ΔSo (J/K) and
ΔGo(KJ) and ΔGo from the
equation ΔGo ≈ ΔHo - TΔSo
at 25.0 oC for
1. C2H5OH
(g) → C2H4
(g) + H2O (l)
2. 2 C4H10
(l) + ___ O2 (g) → ___
CO2 (g) + ___ H2O
(l) (Do not change a coefficient
that is shown)
3. 2 C4H10 (g) + ___ O2
(g) → ___ CO2 (g) + ___
H2O (l) (Do not change
a coefficient that...
Using the equation and thermodynamic data: CO(g) + O2(g) --> CO2(g) (unbalanced) AH(rxn) = -566.0 kJ ( for the balanced equation) Substance sºu/mol*K) O2(g) 205.0 CO(g) 197.7 CO2(g) 213.8 NOTE: Write all answers to four significant figures. a. What is the Assys(J/mol*K) = b. What is the Assurr(J/mol*K) = c. What is the Asuniv( J/mol*K) = d. At what temperature(°C) will the reaction go from spontaneous to non-spontaneous?
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