Test Yourself : Ch42 Introduction to selected homologous series

Which of the following compounds are soluble in water?

(1) CH₃CH₂NH₂

(2) CH₃CH=CH₂

(3) CH₃CH₂COCH₃

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Consider the following compounds:

(1) CH₃CH₂CHO

(2) CH₃CH₂CH₂OH

(3) CH₃CH₂CONH₂

Which of the following correctly arranges the compounds in increasing order of boiling point?

• A. CH₃CH₂CHO < CH₃CH₂CH₂OH < CH₃CH₂CONH₂
• B. CH₃CH₂CHO < CH₃CH₂CONH₂ < CH₃CH₂CH₂OH
• C. CH₃CH₂CONH₂ < CH₃CH₂CHO < CH₃CH₂CH₂OH
• D. CH₃CH₂CH₂OH < CH₃CH₂CHO < CH₃CH₂CONH₂

Which of the following statements concerning propyl ethanoate are correct?

(1) It is produced from the reaction between propan-2-ol and ethanoic acid.

(2) It has a pleasant fruity smell.

(3) It has the same molecular formula as butyl methanoate.

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the statements concerning primary amines are correct?

• A. (1) and (2) only
• B. (1) and (3) only
• C. (2) and (3) only
• D. (1), (2) and (3)

Which of the following statements concerning the first six members of alkanoic acids is INCORRECT?

• A. They ionizes slightly in water to form H⁺(aq) ions.
• B. Their solubilities in water decrease with increasing molecular size.
• C. Their boiling points increase with increasing molecular size.
• D. The first member of the alkanoic acid series is CH₃COOH.

What is the systematic name of the compound as shown in the diagram?

• A. Pentane-2,4-dienoic acid
• B. Pentane-3,5-dienoic acid
• C. Hexane-2,4-dienoic acid
• D. Hexane-3,5-dienoic acid

What is the systematic name of the compound as shown in the diagram?

• A. 3-fluorohexane-2,4-dione
• B. 3-fluorohexane-3,5-dione
• C. 4-fluorohexane-2,4-dione
• D. 4-fluorohexane-3,5-dione

What is the systematic name of the compound as shown in the diagram?

• A. 5-chloroheptane-1,7-diamine
• B. 3-chloroheptane-1,7-diamine
• C. 4-chloropentane-1,5-diamine
• D. 2-chloropentane-1,5-diamine