CaO(s) + 2HCl(g) → CaCl₂(s) + H₂O(l)AS° =C₂H4(g) + H₂(g) →C₂H6(g)AS⁰ =J/KJ/K Calculate the standard entropy change, ASº, in J K-¹ for the following reactions.Use data in the table below:SubstanceAg(s)AgCl(s)Al(s)Al₂O3(s)C(s) (graphite)CO(g)CO₂(g)CH₂(g)CH₂Cl(g)CH₂OH(1)Standard Entropies of Some Typical Substances at 298.15 KSº(J mol-¹ K-¹)4076.1C₂H₂(g)C₂H4(g)C₂H6(g)CgH 18 (1)C₂H₂OH(1)Ca(s)CaCO3(s)CaCl₂(s)Sº(J mol-¹ K-¹)42.5596.228.351.0197.9213.6186.2234.2126.8CO(NH2)2(s) 104.6CO(NH2)2(aq) 173.8200.8219.8229.5466.91615.6941.492.9114SubstanceCaO(s)Ca(OH)₂ (s)CaSO4(s)107CaSO4+H₂O(s) 131CaSO4.2H₂O(s) 194.0223.02790.0130.6188.7Cl₂(g)Fe(s)Fe₂O3(s)H₂(g)H₂O(g)H₂O(1)HCI(g)HNO3(1)H₂SO4(1)HC,H,O,(0)Hg(1)Hg(g)K(s)KCI(s)K₂SO4(s)69.96186.7155.615716076.117564.1882.59176SubstanceN₂(8)NH3(g)NH4Cl(s)NO(g)NO₂(g)N₂O(g)N₂O4(g)Na(s)Na₂CO3(s)NaHCO3(s)NaCl(s)NaOH(s)Na₂SO4(s)02₂(8)PbO(s)S(s)SO₂(g)SO3(g)Sº(J mol-¹ K-¹)191.5192.594.6210.6240.5220.030451.013610272.3864.18149.4205.067.831.9248.5256.2

Using the provided standard entropy values of some substance, we can determine the entropy of…

Answered: CaO(s) + 2HCI(g) → CaCl₂(s) + H₂O(l)…

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CaO(s) + 2HCI(g) → CaCl₂(s) + H₂O(l) AS⁰ = C₂H4(g) + H₂(g) →C₂H6(g) AS⁰ = J/K J/K

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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

CaO(s) + 2HCl(g) → CaCl₂(s) + H₂O(l)
AS° =
C₂H4(g) + H₂(g) →C₂H6(g)
AS⁰ =
J/K
J/K

Calculate the standard entropy change, ASº, in J K-¹ for the following reactions.
Use data in the table below:
Substance
Ag(s)
AgCl(s)
Al(s)
Al₂O3(s)
C(s) (graphite)
CO(g)
CO₂(g)
CH₂(g)
CH₂Cl(g)
CH₂OH(1)
Standard Entropies of Some Typical Substances at 298.15 K
Sº
(J mol-¹ K-¹)
40
76.1
C₂H₂(g)
C₂H4(g)
C₂H6(g)
CgH 18 (1)
C₂H₂OH(1)
Ca(s)
CaCO3(s)
CaCl₂(s)
Sº
(J mol-¹ K-¹)
42.55
96.2
28.3
51.0
197.9
213.6
186.2
234.2
126.8
CO(NH2)2(s) 104.6
CO(NH2)2(aq) 173.8
200.8
219.8
229.5
466.9
161
5.69
41.4
92.9
114
Substance
CaO(s)
Ca(OH)₂ (s)
CaSO4(s)
107
CaSO4+H₂O(s) 131
CaSO4.2H₂O(s) 194.0
223.0
27
90.0
130.6
188.7
Cl₂(g)
Fe(s)
Fe₂O3(s)
H₂(g)
H₂O(g)
H₂O(1)
HCI(g)
HNO3(1)
H₂SO4(1)
HC,H,O,(0)
Hg(1)
Hg(g)
K(s)
KCI(s)
K₂SO4(s)
69.96
186.7
155.6
157
160
76.1
175
64.18
82.59
176
Substance
N₂(8)
NH3(g)
NH4Cl(s)
NO(g)
NO₂(g)
N₂O(g)
N₂O4(g)
Na(s)
Na₂CO3(s)
NaHCO3(s)
NaCl(s)
NaOH(s)
Na₂SO4(s)
02₂(8)
PbO(s)
S(s)
SO₂(g)
SO3(g)
Sº
(J mol-¹ K-¹)
191.5
192.5
94.6
210.6
240.5
220.0
304
51.0
136
102
72.38
64.18
149.4
205.0
67.8
31.9
248.5
256.2

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