MISSED THIS? Watch KCV 9.10, IWE 9.12; Read Section 9.10. You can click on the Review link to access the section in your e Text. Use standard enthalpies of formation from the following table to calculate AH for each reaction. Substance AH (kJ/mol) Al2O3(s) Bi2 O3(s) C₂ H₂(g) C₂H₁ (g) C₂H6 (g) CO(g) CO₂ (1) CO₂(g) Cr₂O3(s) H₂O(g) H₂O (1) HNO3(aq) NO(g) NO₂(g) -1675.7 -573.9 227.4 52.4 -84.68 -110.5 -413.8 -393.5 -1139.7 -241.8 -285.8 -207 91.3 33.2 Part C -> 2HNO3(aq) + NO(g) 3NO2(g) + H₂O(1) Express your answer in kilojoules as an Integer. 15. ΑΣΦ AHx₂ = Submit Part D Cr2O3 (s) +3CO(g) →2Cr(s) + 3CO₂ (g) Express your answer in kilojoules to one decimal place. AHin = Submit Request Answer Provide Feedback IVE ΑΣΦ Request Answer P Pearson ? ? kJ kJ

MISSED THIS? Watch KCV 9.10, IWE 9.12; Read Section 9.10. You can click on the Review link to access the section in your e Text. Use standard enthalpies of formation from the following table to calculate AH for each reaction. Substance AH (kJ/mol) Al2O3(s) Bi2 O3(s) C₂ H₂(g) C₂H₁ (g) C₂H6 (g) CO(g) CO₂ (1) CO₂(g) Cr₂O3(s) H₂O(g) H₂O (1) HNO3(aq) NO(g) NO₂(g) -1675.7 -573.9 227.4 52.4 -84.68 -110.5 -413.8 -393.5 -1139.7 -241.8 -285.8 -207 91.3 33.2 Part C -> 2HNO3(aq) + NO(g) 3NO2(g) + H₂O(1) Express your answer in kilojoules as an Integer. 15. ΑΣΦ AHx₂ = Submit Part D Cr2O3 (s) +3CO(g) →2Cr(s) + 3CO₂ (g) Express your answer in kilojoules to one decimal place. AHin = Submit Request Answer Provide Feedback IVE ΑΣΦ Request Answer P Pearson ? ? kJ kJ

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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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

100%

MISSED THIS? Watch KCV 9.10, IWE 9.12; Road
Section 9.10. You can click on the Review link to
access the section in your e Text.
Use standard enthalpies of formation from the
following table to calculate AH for each
reaction.
Substance AH (kJ/mol)
Al2O3(s)
Bi2 O3(s)
C₂ H₂(g)
C₂H₁ (g)
C₂H6 (g)
CO(g)
CO₂ (1)
CO₂(g)
Cr₂O3(s)
H₂O(g)
H₂O (1)
HNO3(aq)
NO(g)
NO₂(g)
-1675.7
-573.9
227.4
52.4
-84.68
-110.5
-413.8
-393.5
-1139.7
-241.8
-285.8
-207
91.3
33.2
Part C
3NO2(g) + H₂O(1)→ 2HNO3(aq) + NO(g)
Express your answer in kilojoules as an Integer.
15. ΑΣΦ
AHxn=
Submit
Part D
Cr2O3 (s) + 3CO(g) →2Cr(s) + 3CO₂ (g)
Express your answer in kilojoules to one decimal place.
AHin =
Submit
Request Answer
Provide Feedback
IVE ΑΣΦ
Request Answer
P Pearson
a
?
?
kJ
kJ

MISSED THIS? Watch KCV 9.10, IWE 9.12; Read
Section 9.10. You can click on the Review link to
access the section in your eText.
Use standard enthalpies of formation from the
following table to calculate AH for each
reaction.
Substance AH (kJ/mol)
Al2O3(s)
Biz Os(s)
C₂H₂(g)
C₂H₁ (g)
C₂H6 (g)
CO(g)
CO₂ (1)
CO₂(g)
Cr₂O3(s)
H₂O(g)
H₂O(1)
HNO3(aq)
NO(g)
NO₂(g)
-1675.7
-573.9
227.4
52.4
-84.68
-110.5
-413.8
-393.5
-1139.7
-241.8
-285.8
-207
91.3
33.2
Part A
C₂H2(g) + 2H2(g) →→ C₂H6 (g)
Express your answer in kilojoules to one decimal place.
AHxn=
Submit
Part B
AHxn=
[5] ΑΣΦ
CO(g) + H₂O(g) → H2(g) + CO2(g)
Express your answer in kilojoules to one decimal place.
Submit
Request Answer
IVE ΑΣΦ
Request Answer
P Pearson
?
?
kJ
kJ
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