Octane number 2 2 4-trimethyl pentane is________________?
Correct answer: A. 100
- A. 100
- B. 90
- C. 80
- D. 70
Explanation
2,2,4-Trimethylpentane is iso-octane, the standard reference fuel assigned an octane number of 100. The likely distractor is 90, since ordinary gasoline may have an octane rating near that value, but it is not the value of the reference compound.
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About Alkanes
Alkanes are saturated hydrocarbons containing only carbon-carbon and carbon-hydrogen single bonds, with the general formula CnH2n+2 for open chains. Their structure, isomerism, IUPAC nomenclature, physical properties, combustion, free-radical halogenation and conformations are covered, including the difference between substitution in alkanes and addition in unsaturated hydrocarbons.
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