Your Answer Correct Answer Your answer is correct. Use the values from the given table and the equation you chose in Part 1 to find the overall change in enthalpy for the reaction. -196.6 Hint Solution Attempts: 3 of 3 used Part 3 Your answer is correct.
Your Answer Correct Answer Your answer is correct. Use the values from the given table and the equation you chose in Part 1 to find the overall change in enthalpy for the reaction. -196.6 Hint Solution Attempts: 3 of 3 used Part 3 Your answer is correct.
Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section18.5: Entropy Changes And Spontaneity
Problem 2RC
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Concept explainers
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
Question
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Need part 4
![Part 2
Your Answer
Correct Answer
Your answer is correct.
Use the values from the given table and the equation you chose in Part 1 to find the overall change in enthalpy for
the reaction.
-196.6
Hint
Solution
Atte
3 of 3 used
Part 3
Your answer is correct.
For reaction (b) HCI(g) + NaOH(s)
NaCI(s) + H20(1), what is the equation for the change in enthalpy of this
reaction?
[AHF°(HCI(g)) + AHf°(NaOH(s))] - [AHf°(NaCI(s)) + AHF° (H20(1)]
[AHF°(NaCI(s)) + AHF° (H2O(1)] - [AHF°(HCI(g)) + AHF°(NaOH(s))]
Hint
Attempts: 2 of 3 used
Part 4
Use the values from the given table and the equation you chose in Part 3 to find the overall change in enthalpy for
the reaction.
i
Save for Later
Attempts: 0 of 3 used
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Transcribed Image Text:Part 2
Your Answer
Correct Answer
Your answer is correct.
Use the values from the given table and the equation you chose in Part 1 to find the overall change in enthalpy for
the reaction.
-196.6
Hint
Solution
Atte
3 of 3 used
Part 3
Your answer is correct.
For reaction (b) HCI(g) + NaOH(s)
NaCI(s) + H20(1), what is the equation for the change in enthalpy of this
reaction?
[AHF°(HCI(g)) + AHf°(NaOH(s))] - [AHf°(NaCI(s)) + AHF° (H20(1)]
[AHF°(NaCI(s)) + AHF° (H2O(1)] - [AHF°(HCI(g)) + AHF°(NaOH(s))]
Hint
Attempts: 2 of 3 used
Part 4
Use the values from the given table and the equation you chose in Part 3 to find the overall change in enthalpy for
the reaction.
i
Save for Later
Attempts: 0 of 3 used
Submit Answer
![Using the data in the table below, calculate AH° in kilojoules for the following reactions.
Standard Enthalpies of Formation of Typical Substances
Substance
AH; (KI mol-1)
AH (kI mol-1)
AH; (KI mol-1)
Substance
AH; (KJ mol-1)
Substance
H,O;()
HBrg)
Substance
Ag(s)
AgBr()
CH(g)
CH,OH(/)
-187.6
-84.667
NO(g)
90.37
- 100.4
- 127.0
-36
-277.63
NO:(g)
33.8
AgCI()
HCI(g)
-92.30
Cas)
N¿0(g)
81.57
Al()
HI(g)
26.6
CaBr,6)
-682.8
9.67
Al,0,6)
-1669.8
HNO,()
-173.2
CACO)
- 1207
N,O(g)
Na(s)
1
C) (graphite)
H,SO,)
-811.32
CaCl,()
-795.0
CO(g)
-110.5
HC,H,O,()
-487.0
-635.5
NaHCO,()
-947.7
CO2(g)
-393.5
Hg(/)
Ca(OH),6)
-986.59
Na,CO,()
-1131
CH(g)
CH,CI(g)
Hg(g)
60.84
CaSO,()
- 1432.7
- 1575.2
- 2021.1
-74.848
NaCI)
-411.0
-82.0
1,0)
CasO, H,0)
NaOH()
-426.8
CHI(g)
Na, SO,6)
14.2
K(s)
CasO, 2H,0G)
-1384.5
CH,OH()
-238.6
KCI(s)
-435.89
Cl,(g)
CO(NH)() (urea)
-333.19
K,SO,)
- 1433.7
Fe(s)
Pb(s)
CONH(ag)
-391.2
Na(g)
Fe,O,6)
-822.2
PbO(s)
-219.2
CH(g)
226.75
NH,(g)
-46.19
H;(g)
H,O(g)
SG)
CH.g)
52.284
NH,CI)
-315.4
-241.8
So(g)
-296.9
H,O()
-285.9
So,(g)
-395.2
(a) 2H202(1)
2H20(1) + O2(g)
(b) HCI(g) + NaOH(s)
NaCl(s) + H2O(1)
Part 1
Your answer is correct.
For reaction (a) 2H2O21)
2H20(1) + O2(g), what is the equation for the change in enthalpy of this reaction?
[AHF°(O2(3)] - [AHf°(H2O2(1) +AHF°(H2O(1))]
[2ΔΗ(H2Ο () + ΔΗ(Ο29) ] - [2ΔΗΡ(H2Ό ()]
[AHF°(H2O2(1) + AHF°(H2O(1)] - [AH¢°(O2(g)]
[2AHF°(H2O2()] - [2AH¢°(H20(1)) + AH¢°(O2(3)]
Hint
Attempts: 2 of 3 used](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb1ca4019-f596-47d0-9ac7-d83eaf834e41%2Fc425e1c9-e71e-41aa-b1c1-a3499567af61%2Fesreae7_processed.png&w=3840&q=75)
Transcribed Image Text:Using the data in the table below, calculate AH° in kilojoules for the following reactions.
Standard Enthalpies of Formation of Typical Substances
Substance
AH; (KI mol-1)
AH (kI mol-1)
AH; (KI mol-1)
Substance
AH; (KJ mol-1)
Substance
H,O;()
HBrg)
Substance
Ag(s)
AgBr()
CH(g)
CH,OH(/)
-187.6
-84.667
NO(g)
90.37
- 100.4
- 127.0
-36
-277.63
NO:(g)
33.8
AgCI()
HCI(g)
-92.30
Cas)
N¿0(g)
81.57
Al()
HI(g)
26.6
CaBr,6)
-682.8
9.67
Al,0,6)
-1669.8
HNO,()
-173.2
CACO)
- 1207
N,O(g)
Na(s)
1
C) (graphite)
H,SO,)
-811.32
CaCl,()
-795.0
CO(g)
-110.5
HC,H,O,()
-487.0
-635.5
NaHCO,()
-947.7
CO2(g)
-393.5
Hg(/)
Ca(OH),6)
-986.59
Na,CO,()
-1131
CH(g)
CH,CI(g)
Hg(g)
60.84
CaSO,()
- 1432.7
- 1575.2
- 2021.1
-74.848
NaCI)
-411.0
-82.0
1,0)
CasO, H,0)
NaOH()
-426.8
CHI(g)
Na, SO,6)
14.2
K(s)
CasO, 2H,0G)
-1384.5
CH,OH()
-238.6
KCI(s)
-435.89
Cl,(g)
CO(NH)() (urea)
-333.19
K,SO,)
- 1433.7
Fe(s)
Pb(s)
CONH(ag)
-391.2
Na(g)
Fe,O,6)
-822.2
PbO(s)
-219.2
CH(g)
226.75
NH,(g)
-46.19
H;(g)
H,O(g)
SG)
CH.g)
52.284
NH,CI)
-315.4
-241.8
So(g)
-296.9
H,O()
-285.9
So,(g)
-395.2
(a) 2H202(1)
2H20(1) + O2(g)
(b) HCI(g) + NaOH(s)
NaCl(s) + H2O(1)
Part 1
Your answer is correct.
For reaction (a) 2H2O21)
2H20(1) + O2(g), what is the equation for the change in enthalpy of this reaction?
[AHF°(O2(3)] - [AHf°(H2O2(1) +AHF°(H2O(1))]
[2ΔΗ(H2Ο () + ΔΗ(Ο29) ] - [2ΔΗΡ(H2Ό ()]
[AHF°(H2O2(1) + AHF°(H2O(1)] - [AH¢°(O2(g)]
[2AHF°(H2O2()] - [2AH¢°(H20(1)) + AH¢°(O2(3)]
Hint
Attempts: 2 of 3 used
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