Exam 4 Study Problems - EXAM4-StudyProblems . GUIDE!...

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EXAM 4 - Study Problems These problems are desirgned to give you an idea of what may be on the exam. THIS IS NOT A COMPREHENSIVE STUDY GUIDE! You still need to study your notes. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which compound below contains an ester functional group? A) O CH 3 C CH 2 CH 3 B) O H C - O - CH 2 CH 3 C) O CH 3 C - OH D) OH CH 3 C HCH 2 CH 3 E) CH 3 CH 2 - O - CH 2 CH 3 1) 2) The splitting apart of an ester in the presence of a strong acid and water is called 2) 3) Derivatives of which aromatic carboxylic acid have been used as analgesics, antipyretics, and anti - inflammatory agents? 3) 1
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4) Which of these compounds is the ester formed from the reaction of acetic acid and 1 - propanol? CH 3 C OH O CH 2 CH 2 CH 3 CH 3 CH 2 C OH O CH 2 CH 3 CH 3 CH 2 CH 2 OCH 2 C OH CH 3 C OCH 2 CH 2 CH 3 CH 3 CH 2 C OCH 2 CH 3 4) 2
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5) Which of the following is the reaction for the ionization of β - hydroxypropanoic acid in water? A) O O CH 3 CH C OH + H 2 O CH 3 CH C O - + H 3 O + O H O H B) O O HOCH 2 CH 2 C OH + H 2 O HOCH 2 CH 2 C O - + H 3 O + C) O O HOCH 2 CH 2 C OH + 2 H 2 O - OCH 2 CH 2 C O - + 2 H 3 O + D) O O CH 3 CH C OH + H 2 O CH 3 CH C OH + H 3 O + | | OH O - E) O OH HOCH 2 CH 2 C OH + H 2 O HOCH 2 CH 2 C OH + H + 5) TRUE/FALSE. Write ʹ T ʹ if the statement is true and ʹ F ʹ if the statement is false. 6) Naturally derived soaps consist of a soluble salt of a long chain fatty acid. 6) 7) Triacylglycerols are esters of glycerol and long chain carboxylic acids. 7) 8) Long chain carboxylic acids are also known as fatty acids. 8) 9) The major acidic component of vinegar is formic acid. 9) 10) An ester is derived from an alcohol and a carboxylic acid. 10) 3
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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 11) Unsaturated fatty acids have lower melting points than saturated fatty acids because A) they have more hydrogen atoms. B) their molecules fit closely together. C) the trans double bonds give them an irregular shape. D) the cis double bonds give them an irregular shape. E) they have fewer hydrogen atoms. 11)
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