Chapter 11: Problem 68
Give the chemical names of these organic compounds and write their formulas: marsh gas, grain alcohol, wood alcohol, rubbing alcohol, antifreeze, mothballs, chief ingredient of vinegar.
Chapter 11: Problem 68
Give the chemical names of these organic compounds and write their formulas: marsh gas, grain alcohol, wood alcohol, rubbing alcohol, antifreeze, mothballs, chief ingredient of vinegar.
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Get started for freeWrite the structures of three alkenes that yield 2-methylbutane on hydrogenation.
Identify the functional groups in each of these molecules: (a) \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{COCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\) (b) \(\mathrm{CH}_{3} \mathrm{COOC}_{2} \mathrm{H}_{5}\) (c) \(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
Octane number is assigned to gasoline to indicate the tendency of "knocking" in the automobile's engine. The higher the octane number, the more smoothly the fuel will burn without knocking. Branched-chain aliphatic hydrocarbons have higher octane numbers than straight-chain aliphatic hydrocarbons, and aromatic hydrocarbons have the highest octane numbers. (a) Arrange these compounds in the order of decreasing octane numbers: \(2,2,4-\) trimethylpentane, toluene (methylbenzene), \(n\) -heptane, and 2 -methylhexane. (b) Oil refineries carry out catalytic reforming in which a straight-chain hydrocarbon, in the presence of a catalyst, is converted to an aromatic molecule and a useful by-product. Write an equation for the conversion from \(n\) -heptane to toluene. (c) Until 2000 , tert-butylmethyl ether had been widely used as an antiknocking agent to enhance the octane number of gasoline. Write the structural formula of the compound.
Comment on the extra stability of benzene compared to ethylene. Why does ethylene undergo addition reactions while benzene usually undergoes substitution reactions?
The structural isomers of pentane, \(\mathrm{C}_{5} \mathrm{H}_{12}\), have quite different boiling points (see Example 11.1 ). Explain the observed variation in boiling point, in terms of structure.
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