Organic Chemistry
8th Edition
ISBN: 9781305580350
Author: William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote
Publisher: Cengage Learning
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Chapter 2, Problem 2.57P
Following are heats of combustion per mole for methane, propane, and 2,2,4-trimeth-ylpentane. Each is a major source of energy. On a gram-for-gram basis, which of these hydrocarbons is the best source of heat energy?
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Given that 2.5 x 10^-2 moles of a hydrocarbon experience full combustion, resulting in the release of 104.1 kJ of heat, what is the molar enthalpy of combustion for said hydrocarbon?
The heat of combustion of 2-methylheptane, C8H18, is 5464 kJ/mol. How much energy is released during the complete combustion of 399 grams of 2-methylheptane ?
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c) 16,200 kJ
d) 20,100 kJ
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Chapter 2 Solutions
Organic Chemistry
Ch. 2.2 - Do the line-angle formulas in each pair represent...Ch. 2.2 - Draw line-angle formulas for the three...Ch. 2.3 - Write IUPAC names for these alkanes.Ch. 2.4 - Combine the proper prefix, infix, and suffix and...Ch. 2.4 - Write the molecular formula, IUPAC name, and...Ch. 2.4 - Write molecular formulas for each bicycloalkane,...Ch. 2.4 - Prob. 2.7PCh. 2.5 - For 1,2-dichloroethane: (a) Draw Newman...Ch. 2.5 - Following is a chair conformation of cyclohexane...Ch. 2.5 - Draw the alternative chair conformation for the...
Ch. 2.5 - Draw a chair conformation of...Ch. 2.6 - Which cycloalkanes show cis, trans isomerism? For...Ch. 2.6 - Following is a planar hexagon representation for...Ch. 2.6 - Here is one cis,trans isomer of...Ch. 2.6 - Prob. AQCh. 2.6 - Prob. BQCh. 2.6 - Prob. CQCh. 2.7 - Arrange the alkanes in each set in order of...Ch. 2 - Write a line-angle formula for each condensed...Ch. 2 - Write the molecular formula of each alkane.Ch. 2 - Using parentheses and subscripts, provide an even...Ch. 2 - Which statements are true about constitutional...Ch. 2 - Prob. 2.20PCh. 2 - Each member of the following set of compounds is...Ch. 2 - Each of the following compounds is an amine...Ch. 2 - Each of the following compounds is either an...Ch. 2 - Draw structural formulas and write IUPAC names for...Ch. 2 - Draw structural formulas for all of the following....Ch. 2 - Write IUPAC names for these alkanes and...Ch. 2 - Write structural formulas and line-angle formulas...Ch. 2 - Explain why each is an incorrect IUPAC name and...Ch. 2 - For each IUPAC name, draw the corresponding...Ch. 2 - Write the IUPAC name for each compound.Ch. 2 - Prob. 2.31PCh. 2 - Torsional strain resulting from eclipsed CH bonds...Ch. 2 - How many different staggered conformations are...Ch. 2 - Consider 1-bromopropane, CH3CH2CH2Br. (a) Draw a...Ch. 2 - Consider 1-bromo-2-methylpropane and draw the...Ch. 2 - trans-1,4-Di-tert-butylcyclohexane exists in a...Ch. 2 - From studies of the dipole moment of...Ch. 2 - Prob. 2.38PCh. 2 - Following are the alternative chair conformations...Ch. 2 - Prob. 2.40PCh. 2 - Prob. 2.41PCh. 2 - Draw line-angle formulas for the cis and trans...Ch. 2 - Name and draw structural formulas for all...Ch. 2 - Using a planar pentagon representation for the...Ch. 2 - Gibbs free energy differences between...Ch. 2 - Prob. 2.46PCh. 2 - Calculate the difference in Gibbs free energy in...Ch. 2 - Draw the alternative chair conformations for the...Ch. 2 - Use your answers from Problem 2.48 to complete the...Ch. 2 - There are four cis,trans isomers of...Ch. 2 - Draw alternative chair conformations for each...Ch. 2 - 1,2,3,4,5,6-Hexachlorocyclohexane shows cis,trans...Ch. 2 - Prob. 2.53PCh. 2 - What generalization can you make about the...Ch. 2 - What unbranched alkane has about the same boiling...Ch. 2 - Complete and balance the following combustion...Ch. 2 - Following are heats of combustion per mole for...Ch. 2 - Following are structural formulas and heats of...Ch. 2 - Without consulting tables, arrange these compounds...Ch. 2 - Which would you predict to have the larger (more...Ch. 2 - Following are structural formulas for 1,4-dioxane...Ch. 2 - Following is a planar hexagon representation of...Ch. 2 - On the left is a stereorepresentation of glucose...Ch. 2 - Prob. 2.64PCh. 2 - Prob. 2.65P
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Write the balanced chemical equation for the complete combustion of ethane. Reactants Products C2H6 (g) + → Formulate (skeletal formula) the main products for the oxidation and dehydration reactions of the following compound: Reactant Oxidation product Dehydration products | OH CH3―CH2―CH―CH2―CH3arrow_forward2.) What is the heat energy needed to raise the temperature of 6.63moles of ethanol CH3CH2OH from a temperature of 2.33°C to 17.5°C. [CH3CH2OH=46.07g/mol] [CCH3CH2OH=2.46J/g°C]arrow_forward12. Write bond-line structural formulas for (a.) two primary alcohols, (b.) a secondary alcohol, and (c.) a tertiary alcohol-all having the molecular formula CaH100.arrow_forward
- If the heat of combustion for theobromine is the same as caffeine (2211 kcal/mol), how much heat in kcal will be given off by combustion of 0.68 g of theobromine?arrow_forwardDraw the enthalpy diagram for the formation of octane.arrow_forwardWhat is the molecular formula of a hydrocarbon that contains 5 carbons, one ring, and one bond?arrow_forward
- Given that there are three possible cis-dimethylcyclohexanes, if the same amount of these compounds were each combusted in a calorimeter, which one pf the three would be expected to release the least amount of heat?arrow_forwardAdd hydrogens to each of the hydrocarbons and identify the class of molecule to which each belongs. Add hydrogen to the first hydrocarbon. The first hydrocarbon is an (alkane, alkene, alkyne).arrow_forwardIdentify the class of hydrocarbon, type according to bond present, and type of combustion (partial or complete) of the following compounds down below: n hexane phenol cyclohexene gasolinearrow_forward
- Following are heats of combustion per mole for methane, propane, and 2,2,4-trimeth- ylpentane. Each is a major source of energy. On a gram-for-gram basis, which of these hydrocarbons is the best source of heat energy? AHO [kJ (kcal)/mol] Hydrocarbon Component of CH, Natural gas -891 (-213) CH,CH,CH, LPG - 2220 (-531) CH3 CH3 CH,CCH,CHCH3 1. ČH3 Gasoline -5452 (-1304)arrow_forward3. Consider the following table. List three substances as having the strongest intermolecular forces. Explain your reason. Formula CH4 HOH C₂H6 CH₂OH C3H8 CH₂CH₂OH C4H10 CH3CH₂CH₂OH Name methane water ethane methanol propane ethanol butane 1-propanol Molar Mass Boiling Point (°C) -164 100 -89 65 -42 78 16 18 30 32 44 46 58 60 97arrow_forwardThe molar heat of combustion of gaseous cyclopropaneis -2089 kJ/mol; that for gaseous cyclopentane is-3317 kJ/mol. Calculate the heat of combustion per CH2group in the two cases, and account for the difference.arrow_forward
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Chapter 4 Alkanes and Cycloalkanes Lesson 2; Author: Linda Hanson;https://www.youtube.com/watch?v=AL_CM_Btef4;License: Standard YouTube License, CC-BY
Chapter 4 Alkanes and Cycloalkanes Lesson 1; Author: Linda Hanson;https://www.youtube.com/watch?v=PPIa6EHJMJw;License: Standard Youtube License