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Which of the two fuels below should have a higher octane rating? Please explain.

(a) octane (CH3CH2CH2CH2CH2CH2CH2CH3) or

2,3,3-trimethyl-pentane [CH3CH(CH3)C(CH3)2CH2CH3]?

(b) benzene or hexane?

Respuesta :

Answer:

2,3,3-trimethyl-pentane [CH3CH(CH3)C(CH3)2CH2CH3]

Explanation:

Octane number is index of indicating anti- knock properties of a fuel in comparison with mixture of iso-octane and heptane . Octane no of pure

iso-octane is 100 and that of heptane is 0 . The higher the ratio of highly branched compound , greater the octane number. 2,3,3-trimethyl-pentane

is highly branched so it has higher octane number.

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