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Recent questions in Chemistry
0
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1
answer
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Calculate the standard free energy change for the following redox reaction under standard conditions:2 Fe3+ (aq) + H2 (g) → 2 Fe2+ (aq) + 2 H+ (aq)Given: Standard reduction potential of Fe3+ / Fe2+ = -0.771 V Standard reduction potential of H+ / H2 = 0.00 V
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4 days
ago
in
Chemical thermodynamics
by
BennieHeitma
(
710
points)
0
votes
1
answer
34
views
Calculate the standard free energy change for the following redox reaction at 298 K:2 Mg(s) + O2(g) -> 2 MgO(s)(The standard reduction potential for Mg2+/Mg is -2.37 V and for O2/H2O is +1.23 V)
asked
4 days
ago
in
Chemical thermodynamics
by
NoraSneddon
(
650
points)
0
votes
1
answer
21
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Calculate the standard free energy change for the following redox reaction at 298 K:Mg(s) + 2H+(aq) -> Mg2+(aq) + H2(g)Given: Eºred for Mg2+/Mg = -2.37 V & Eºred for H+/H2 = 0 V.
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4 days
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in
Chemical thermodynamics
by
MylesDoherty
(
550
points)
0
votes
1
answer
24
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Calculate the standard free energy change for the following redox reaction at 25°C:2Fe(s) + 3/2 O2(g) -> Fe2O3(s)Given the following half-reactions and their standard reduction potentials at 25°C:Fe2O3(s) + 3H2O(l) + 2e- -> 2Fe(OH)3(s) E°= -0.33VO2(g) + 4H+(aq) + 4e- -> 2H2O(l) E°= +1.23VFe(OH)3(s) -> Fe3+(aq) + 3OH-(aq) E°= -0.25V
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4 days
ago
in
Chemical thermodynamics
by
JesusJack053
(
510
points)
0
votes
1
answer
25
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Calculate the standard free energy change (ΔG°) for the redox reaction:Cu(s) + 2Ag+(aq) → Cu2+(aq) + 2Ag(s) Given that the standard reduction potentials of Cu2+(aq)/Cu(s) and Ag+(aq)/Ag(s) are +0.34V and +0.80V, respectively.
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4 days
ago
in
Chemical thermodynamics
by
NellyCorwin
(
330
points)
0
votes
1
answer
26
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Calculate the standard free energy change (ΔG°) for the following redox reaction: Zn (s) + 2H+ (aq) → Zn2+ (aq) + H2 (g)Given: ΔG°f (Zn2+) = -153.9 kJ/mol ΔG°f (H+) = 0 kJ/mol ΔG°f (H2) = 0 kJ/mol ΔG°f (Zn) = 0 kJ/mol
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4 days
ago
in
Chemical thermodynamics
by
DemetriaOhma
(
350
points)
0
votes
1
answer
32
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Calculate the standard free energy change (ΔG°) for the following redox reaction at 298K:Zn(s) + Cu2+(aq) → Zn2+(aq) + Cu(s) (Given: E°cell = 1.10V, F = 96,500 J/V.mol)
asked
4 days
ago
in
Chemical thermodynamics
by
LawrenceBuck
(
410
points)
0
votes
1
answer
29
views
Calculate the standard free energy change (ΔG°) for the following redox reaction at 298 K, given that E°cell = 0.91 V:Zn(s) + 2 Ag+(aq) → Zn2+(aq) + 2 Ag(s)
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4 days
ago
in
Chemical thermodynamics
by
JaymeBolick
(
330
points)
0
votes
1
answer
25
views
Calculate the standard free energy change (ΔG°) for the following reaction at 25°C: 2Fe2+(aq) + Cu2+(aq) -> 2Fe3+(aq) + Cu+(aq) (Standard reduction potentials: Fe3+(aq) + e- -> Fe2+(aq) E° = 0.77 V Cu2+(aq) + e- -> Cu+(aq) E° = 0.16 V)
asked
4 days
ago
in
Chemical thermodynamics
by
StephaineTur
(
610
points)
0
votes
1
answer
23
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Calculate the standard free energy change (∆G°) for the reaction: 2CH4(g) + 3O2(g) → 2CO2(g) + 2H2O(l) at 298 K, given that the standard enthalpy change (∆H°) of the reaction is -890.4 kJ mol^-1 and the standard entropy change (∆S°) of the reaction is +292.2 J K^-1 mol^-1. Is the reaction spontaneous or non-spontaneous under standard conditions?
asked
4 days
ago
in
Physical Chemistry
by
WendyHenning
(
490
points)
0
votes
1
answer
33
views
Calculate the standard free energy change (∆G°) for the following redox reaction at 25°C:2 Fe³⁺(aq) + 3 H₂(g) → 2 Fe(s) + 6 H⁺(aq)
asked
4 days
ago
in
Chemical thermodynamics
by
FrancescoSgp
(
470
points)
0
votes
1
answer
31
views
Calculate the standard entropy change of the following reaction: 2Fe(s) + 3Cl2(g) → 2FeCl3(s) Given that the standard enthalpy change for this reaction is -400 kJ/mol at 298 K and the standard molar entropy of FeCl3(s) is 95 J/mol K.
asked
4 days
ago
in
Inorganic Chemistry
by
FosterDibell
(
230
points)
0
votes
1
answer
33
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Calculate the standard entropy change for the reaction: 2H2 (g) + O2 (g) -> 2H2O (g) given the standard enthalpy of formation of H2O (g) is -241.8 kJ/mol at 298 K.
asked
4 days
ago
in
Inorganic Chemistry
by
MelindaPolen
(
610
points)
0
votes
1
answer
36
views
Calculate the standard entropy change for the reaction: 2SO3(g) + O2(g) → 2SO4(g) Given the following standard entropies of formation: ΔS°f SO3(g) = 256.2 J/K mol ΔS°f O2(g) = 205.0 J/K mol ΔS°f SO4(g) = 296.8 J/K mol
asked
4 days
ago
in
Inorganic Chemistry
by
AngelinaOrch
(
490
points)
0
votes
1
answer
34
views
Calculate the standard entropy change for the reaction of 2 moles of nitrogen gas reacting with 5 moles of oxygen gas to produce 2 moles of nitrogen monoxide gas at a constant pressure of 1 bar and 298 K. Given the standard molar entropy of nitrogen gas, oxygen gas, and nitrogen monoxide gas to be 191.6 J K-1 mol-1, 205.0 J K-1 mol-1, and 210.6 J K-1 mol-1, respectively.
asked
4 days
ago
in
Chemical thermodynamics
by
NganWae07540
(
630
points)
0
votes
1
answer
28
views
Calculate the standard entropy change for the reaction below at a temperature of 298 K:CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) The standard molar entropies are as follows: S(CH4) = 186.3 J K^-1 mol^-1S(O2) = 205.0 J K^-1 mol^-1S(CO2) = 213.7 J K^-1 mol^-1S(H2O) = 188.8 J K^-1 mol^-1
asked
4 days
ago
in
Chemical thermodynamics
by
DeloresBrune
(
430
points)
0
votes
1
answer
18
views
Calculate the standard entropy change for the reaction 2H2(g) + O2(g) → 2H2O(g) given the standard entropy values of H2(g) = 130.6 J/mol K, O2(g) = 205.0 J/mol K, and H2O(g) = 188.8 J/mol K. Also, determine whether the reaction is spontaneous or not at 298 K.
asked
4 days
ago
in
Inorganic Chemistry
by
CareyDullo8
(
330
points)
0
votes
1
answer
36
views
Calculate the standard entropy change for the following reaction at 298 K:CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l) Given the standard entropies of CH4(g), O2(g), CO2(g), and H2O(l) are 186.26 J/K/mol, 205.03 J/K/mol, 213.74 J/K/mol, and 69.95 J/K/mol respectively.
asked
4 days
ago
in
Chemical thermodynamics
by
Catharine458
(
550
points)
0
votes
1
answer
20
views
Calculate the standard enthalpy of reduction for the following reaction: Fe2O3 (s) + 3 H2(g) → 2 Fe(s) + 3 H2O(g)Given: ΔH°f for Fe2O3 (s) = -824.2 kJ/mol ΔH°f for H2O(g) = -241.8 kJ/molΔH°f for Fe(s) = 0 kJ/mol
asked
4 days
ago
in
ThermoChemistry
by
TiaraTraill
(
390
points)
0
votes
1
answer
24
views
Calculate the standard enthalpy of precipitation for the reaction: AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq) given that the standard enthalpies of formation for AgNO3(aq), NaCl(aq), AgCl(s), and NaNO3(aq) are -123.2 kJ/mol, -407.3 kJ/mol, -127.0 kJ/mol, and -467.3 kJ/mol, respectively.
asked
4 days
ago
in
ThermoChemistry
by
DarciPok795
(
530
points)
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