Use and modify some/all the reactions provided to form the indicated overall reaction according to Hess' Law. • If a reaction is not used in your Hess' Law process, include that indication by multiplying the reaction by "0" • If no modification is needed and the reaction is applied as written below, include that indication by multiplying the reaction by "1" • Use whole numbers and simple fractions (such as "2" or "1/2", not 0.5) and negative signs (such as "-2") where needed Then calculate and report the enthalpy change (in kJ) for the overall reaction in the indicated blank, including units with your written value and rounded to 1 decimal place. Overall Reaction: CS2(1) + 302(g) → CO2(g) +2SO2(g) Rxn # Reaction ΔΗ° (kJ) 1 C(s) → C(g) 716.67 2 C(s) + O2(g) → CO2(g) -393.5 3 3Fe(s) +202(g) → Fe3O4(s) -1118 4 C(s) + 2S (s) → CS2(1) 87.9 5 CH4(g) + O2(g) → CO2(g) + H₂O(g) -882.0 S(s) + O2(g) → SO2(g) -296.8 N2(g) + 4H2(g) + Cl2(g) → 2NH4Cl(g) -629.1 6 7
Use and modify some/all the reactions provided to form the indicated overall reaction according to Hess' Law. • If a reaction is not used in your Hess' Law process, include that indication by multiplying the reaction by "0" • If no modification is needed and the reaction is applied as written below, include that indication by multiplying the reaction by "1" • Use whole numbers and simple fractions (such as "2" or "1/2", not 0.5) and negative signs (such as "-2") where needed Then calculate and report the enthalpy change (in kJ) for the overall reaction in the indicated blank, including units with your written value and rounded to 1 decimal place. Overall Reaction: CS2(1) + 302(g) → CO2(g) +2SO2(g) Rxn # Reaction ΔΗ° (kJ) 1 C(s) → C(g) 716.67 2 C(s) + O2(g) → CO2(g) -393.5 3 3Fe(s) +202(g) → Fe3O4(s) -1118 4 C(s) + 2S (s) → CS2(1) 87.9 5 CH4(g) + O2(g) → CO2(g) + H₂O(g) -882.0 S(s) + O2(g) → SO2(g) -296.8 N2(g) + 4H2(g) + Cl2(g) → 2NH4Cl(g) -629.1 6 7
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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Transcribed Image Text:Use and modify some/all the reactions provided to form the indicated overall reaction
according to Hess' Law.
• If a reaction is not used in your Hess' Law process, include that indication by multiplying
the reaction by "0"
• If no modification is needed and the reaction is applied as written below, include that
indication by multiplying the reaction by "1"
• Use whole numbers and simple fractions (such as "2" or "1/2", not 0.5) and negative
signs (such as "-2") where needed
Then calculate and report the enthalpy change (in kJ) for the overall reaction in the indicated
blank, including units with your written value and rounded to 1 decimal place.
Overall Reaction: CS2(1) + 302(g) → CO2(g) + 2SO2(g)
Rxn #
Reaction
ΔΗ° (kJ)
1
C(s) → C(g)
716.67
2
C(s) + O2(g) → CO2(g)
-393.5
3
3Fe(s) +202(g) → Fe3O4(s)
-1118
4
C(s) + 2S(s) → CS2(1)
87.9
5
CH4(g) + O2(g) → CO₂(g) + H₂O(g)
-882.0
6
S(s) + O2(g) → SO2(g)
-296.8
N2(g) + 4H2(g) + Cl2(g) → 2NH4Cl(g)
-629.1
7

Transcribed Image Text:x Rxn #1: C (s) → C (g)
A/
x Rxn #2: C (s) + O₂(g) → CO₂ (g)
A/
x Rxn#3: 3Fe (s) + 202 (g) → Fe3O4 (s)
x Rxn#4: C (s) + 2S (s) CS₂ (1)
x Rxn#5: CH4 (g) + O₂ (g) → CO2 (g) + H₂O (g)
-
A/
x Rxn #6: S (s) + O₂(g) → SO₂ (g)
x Rxn #7: N₂ (g) + 4H₂ (g) + Cl₂ (g) → 2NH4Cl (g)
AH overall reaction
=
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