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CHE 105/110 Introduction to Chemistry - Exercises and Answers

Other Functional Groups

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QUESTION ANSWER

1.

What are the structure and name of the smallest amine?

1.

CH3NH2; methylamine

3.

Identify each compound as a primary, secondary, or tertiary amine.

  1.  

    Organic compound structure showing the Carboxyl (COOH), the amine (-NH2) and the thiol (-SH) functional groups.
  2.  

    Organic compound structure showing amine functional group and a cycloalkyl radical.
  3.  

    Organic compound structure showing amine functional group.

3.

  1. primary
  2. tertiary
  3. secondary

5.

Write the chemical reaction between each amine in Exercise 3 and HCl.

5.

  1. C3H3CO2HSHNH2 + HCl → C3H3CO2HSHNH3Cl

  2. (C6H11)(C2H5)(CH3)N + HCl → (C6H11)(C2H5)(CH3)NHCl

  3. (C2H5)(CH3)NH + HCl → (C2H5)(CH3)NH2Cl

7.

Name each amine.

  1.  

    Organic compound structure of Methylethylamine showing the amine functional group.
  2.  

    Organic compound structure showing the amine functional group and benzene cycle.

 

7.

  1. ethylmethylamine
  2. phenylamine

9.

A peptide is a short chain of amino acids connected by amide bonds. How many amide bonds are present in this peptide?

Organic compound showing several functional groups of amide family (Nitrogen bound to Carbon of the Carbonyl group.

9.

two

11.

Draw the backbone structure of the amide formed by reacting propylamine with propanoic acid.

11.

Organic compound showing containing amide functional group (Nitrogen bound to Carbon of the Carbonyl group.

13.

Name each thiol using the -thiol suffix.

  1.  

    Organic compound structure showing the thiol (-SH) functional group joined to a cyclo alkane structure.
  2. C4H9–SH

13.

  1. cyclohexanethiol
  2. butanethiol

15.

One component of skunk spray is 3-methyl-1-butanethiol. Draw its structure. (The 1 indicates the position of the S atom.)

15.

Organic compound structure showing the thiol (-SH) functional group joined to an alkane structure.

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