Concept explainers
(a)
Interpretation:
The chemical equations for the combustion of propane and ethyne have to be written.
Concept Introduction:
A hydrocarbon undergoes complete combustion to produce carbon dioxide and water. This is chemical property of all hydrocarbons.
Complete combustion occurs if enough oxygen is present.
Incomplete combustion occurs, if there is not enough oxygen present. Incomplete combustion results in the formation of toxic gases.
(a)

Answer to Problem 11.47E
The chemical equation for complete combustion reaction of propane is,
The chemical equation for complete combustion reaction of ethyne (Acetylene) is,
Explanation of Solution
Combustion reaction of Propane:
Propane undergoes complete combustion reaction to form carbon dioxide and water.
The chemical equation for complete combustion reaction of propane is,
The incomplete combustion reaction of propane results in the formation of carbon, carbon monoxide, carbon dioxide and water. The chemical equation for incomplete combustion reaction of propane is,
Combustion reaction of Acetylene:
Acetylene (or) ethyne undergoes complete combustion reaction to form carbon dioxide and water vapor as their products. The chemical equation for complete combustion reaction of acetylene is,
(b)
Interpretation:
The enthalpy of combustion for each fuel per gram and per mole has to be calculated.
Concept Introduction:
Hess Law:
The total enthalpy change during the complete course of a
(b)

Explanation of Solution
Combustion reaction of Propane:
Propane undergoes complete combustion reaction to form carbon dioxide and water.
The chemical equation for complete combustion reaction of propane is,
Enthalpy of combustion of propane:
Heat of formation of propane=
Heat of formation of carbon dioxide gas=
Heat of formation of water=
The enthalpy of combustion of propane is,
The enthalpy of combustion of propane is
The enthalpy of combustion of propane is
Combustion reaction of Acetylene:
Acetylene (or) ethyne undergoes complete combustion reaction to form carbon dioxide and water vapor as their products. The chemical equation for complete combustion reaction of acetylene is,
Enthalpy of combustion of acetylene:
Heat of formation of acetylene=
Heat of formation of carbon dioxide gas=
Heat of formation of water=
The enthalpy of combustion of acetylene is,
The enthalpy of combustion of acetylene is
The enthalpy of combustion of acetylene is
(c)
Interpretation:
The reason why propane torches are not used for wielding has to be calculated.
(c)

Explanation of Solution
Propane undergoes complete combustion reaction to form carbon dioxide and water.
The chemical equation for complete combustion reaction of propane is,
The enthalpy of combustion of propane is
Acetylene (or) ethyne undergoes complete combustion reaction to form carbon dioxide and water vapor as their products. The chemical equation for complete combustion reaction of acetylene is,
The enthalpy of combustion of acetylene is
The enthalpy of combustion of propane is higher than the enthalpy of combustion of acetylene, and hence it cannot be used for wielding purposes. It also produces a lower flame temperature and the pre-heat time is more. Propane cannot be used for gas wielding because it does not have a reducing zone.
Want to see more full solutions like this?
Chapter 11 Solutions
ACHIEVE/CHEMICAL PRINCIPLES ACCESS 2TERM
- Part 9 of 9 Consider the products for the reaction. Identify the major and minor products. HO Cl The E stereoisomer is the major product and the Z stereoisomer is the minor product ▼ S major product minor productarrow_forwardConsider the reactants below. Answer the following questions about the reaction mechanism and products. HO Clarrow_forwardjulietteyep@gmail.com X YSCU Grades for Juliette L Turner: Orc X 199 A ALEKS - Juliette Turner - Modul X A ALEKS - Juliette Turner - Modul x G butane newman projection - Gox + www-awa.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBxzaplnN4HsoQggFsejpgqKoyrQrB2dKVAN-BcZvcye0LYa6eXZ8d4vVr8Nc1GZqko5mtw-d1MkNcNzzwZsLf2Tu9_V817y?10Bw7QYjlb il Scribbr citation APA SCU email Student Portal | Main Ryker-Learning WCU-PHARM D MySCU YSCU Canvas- SCU Module 4: Homework (Ch 9-10) Question 28 of 30 (1 point) | Question Attempt: 1 of Unlimited H₂SO heat OH The mechanism of this reaction involves two carbocation intermediates, A and B. Part 1 of 2 KHSO 4 rearrangement A heat B H₂O 2 OH Draw the structure of A. Check Search #t m Save For Later Juliet Submit Assignm 2025 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessarrow_forward
- The electrons flow from the electron-rich atoms of the nucleophile to the electrons poor atoms of the alkyl halide. Identify the electron rich in the nucleophile. Enter the element symbol only, do not include any changes.arrow_forwardHello, I am doing a court case analysis in my Analytical Chemistry course. The case is about a dog napping and my role is prosecution of the defendant. I am tasked in the Area of Expertise in Neutron Activation and Isotopic Analysis. Attached is the following case study reading of my area of expertise! The landscaping stone was not particularly distinctive in its decoration but matched both the color and pattern of the Fluential’s landscaping stone as well as the stone in the back of the recovered vehicle. Further analysis of the stone was done using a technique called instrumental neutron activation analysis. (Proceed to Neutron Activation data) Photo Notes: Landscaping stone recovered in vehicle. Stone at Fluential’s home is similar inappearance. Finally, the white paint on the brick was analyzed using stable isotope analysis. The brick recovered at the scene had smeared white paint on it. A couple of pieces of brick in the back of the car had white paint on them. They…arrow_forwardCite the stability criteria of an enamine..arrow_forward
- What would you expect to be the major product obtained from the following reaction? Please explain what is happening here. Provide a detailed explanation and a drawing showing how the reaction occurs. The correct answer to this question is V.arrow_forwardPlease answer the question for the reactions, thank youarrow_forwardWhat is the product of the following reaction? Please include a detailed explanation of what is happening in this question. Include a drawing showing how the reagent is reacting with the catalyst to produce the correct product. The correct answer is IV.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning
- Introductory Chemistry: An Active Learning Approa...ChemistryISBN:9781305079250Author:Mark S. Cracolice, Ed PetersPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning





