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University of Kentucky Clicker Questions Chapter 20 Organic Chemistry Allison Soult University of Kentucky

What is the general formula for an alkyne? CnH2n+2 CnH2n+1 CnH2n CnH2n−1 CnH2n−2 Answer: e

Which two are structural isomers? II. III. I and II II and III I and III There are no structural isomers in this set. Answer: d

Which of the following can exhibit optical isomerism? d) Answer: c

Give the IUPAC name for the branched alkane pictured below. 6-butyl-4-ethyl-3-methylheptane 2-butyl-4-ethyl-5-methylheptane 4-ethyl-3,6-dimethyldecane 7-ethyl-5,8-dimethyldecane 4-ethyl-3,6-methyldecane Answer: c

Which of the following compounds is most likely to have only one double bond? Answer: c C7H14 d) C9H14

What is the name of this compound? 1-decene 3-propyl-1-heptene 4-etheneheptane 5-propyl-7-heptene Answer:b

Which of the following compounds could exhibit geometric isomerism? a) CH2=CHCH3 b) CH3CH=CHCH3 c) Answer: b CCl2=CF2 d) CHCl=CF2

Which class of compounds is the least reactive? alkanes alkenes alkynes They are all the same. There is no trend in the reactivity. Answer: a

What is the product when 1-butene reacts with HCl? 2-chlorobutane 1-chlorobutane 1,2-dichlorobutane butane Answer: a

Which functional groups are present in the molecule penicillin shown below? Alcohol Amine Ester Carboxylic acid All of the above Answer: e

Which of the following is the most oxidized? a) b) c) d) Answer: d

Which of the following reactions is correct? b) c) Answer: d d) e) All are correct

The artificial banana scent is caused by the molecule shown below The artificial banana scent is caused by the molecule shown below. Give the IUPAC name for this molecule. Butyl ethanoate Ethyl pentanoate Methyl pentanoate Pentyl ethanoate Pentyl methanoate Answer: d

Ethyl cinnamate (cinnamon fragrance) is produced in the following esterification reaction. Which of the following is the correct structure for ethyl cinnamate? a) b) Answer: c c) d)

Polystyrene is a polymer that is commonly used in packaging and disposable food containers. Identify the monomer from the polymer structure shown below. Answer: a a) b) c) d)