Concept explainers
5-118 Isooctane, which has a chemical formula C8H18 is the component of gasoline from which the term octane rating derives.
(a) Write the balanced chemical equation for the combustion of isooctane.
(b) The density of isooctane is 0.792 g/mL. How many kg of C02 are produced each year by the annual U.S. gasoline consumption of L?
(c) What is the volume in liters of this CO2 at STP?
(d) The chemical formula for isooctane can be represented by (CH3)3CCH2CH(CH3)2. Draw a Lewis structure of isooctane.
(e) Another molecule with the same molecular formula is octane, which can be represented by:
When comparing isooctane and octane, one structure is observed to have a boiling point of 99°C, while another is known to have a boiling point Of 125°C. Which substance, isooctane or octane, is expected to have the higher boiling point?
(f) Determine whether isooctane or octane is expected to have the greater vapor pressure.
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Chapter 5 Solutions
Introduction to General, Organic and Biochemistry
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