Bottled straight-chain alkanes can be used as fuels, including heptane and octane . Which one has the greater fuel density? By how much are the fuel values different? Give the magnitude of the difference (the absolute value).

Bottled straight-chain alkanes can be used as fuels, including heptane and octane . Which one has the greater fuel density? By how much are the fuel values different? Give the magnitude of the difference (the absolute value).

Introduction to General, Organic and Biochemistry

11th Edition

ISBN:9781285869759

Author:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Publisher:Frederick A. Bettelheim, William H. Brown, Mary K. Campbell, Shawn O. Farrell, Omar Torres

Chapter5: Gases, Liquids, And Solids

Section: Chapter Questions

Problem 5.74P

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Concept explainers

Alkanes and Cycloalkanes

Alkanes are saturated organic compounds which are made up of C and H atoms. Alkanes have the general formula of CnH2n+2. Alkane contains sp3 hybridized carbon atoms with four sigmas (σ) bonds & every hydrogen atom is connected with one of the carbon atoms. The size of the alkane could be determined by the number of carbon atoms located in it.

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Bottled straight-chain alkanes can be used as fuels, including heptane and octane .

Which one has the greater fuel density?

By how much are the fuel values different? Give the magnitude of the difference (the absolute value).

heptane
octane
AH° comb (kJ/mol)
-4871.0
-5430.0
Liquid Denisty (g/mL)
0.655
0.703

Definition Definition Simplest organic compounds that contain only single bonds between carbon – carbon atoms and carbon – hydrogen bonds. This means they are a series of saturated compounds with a general molecular formula, C n H 2n+2 .

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