January 2009 Chemistry Regents #80-81

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Base your answers to questions 80 through 81 on the information below.

Ethyl butanoate is an organic compound that contributes to the odor of pineapple. Ethyl butanoate is one of the products formed by the reaction of butanoic acid with ethanol.

80 Identify two differences in the structures between a molecule of butanoic acid and a molecule of ethanol. Each of your responses must include both compounds. [2]

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A butanoic acid molecule has four carbon atoms and an ethanol molecule has two carbon atoms.

Butanoic acid has a different functional group than ethanol.

A butanoic acid molecule has more hydrogen atoms than an ethanol molecule.

In a butanoic acid molecule, one oxygen atom has a double bond and in an ethanol molecule, the oxygen atom has two single bonds.

81 Identify the type of organic reaction that produces the compound that contributes to the odor of pineapple. [1]

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esterification

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Questions 51-53 Questions 54-55 Questions 56-58 Questions 59-61 Questions 62-64 Questions 65-66 Questions 67-68 Questions 69-71 Questions 72-74 Questions 75-77 Questions 78-79 Questions 80-81

 
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