23. If you had to work in a laboratory filled with carboxylic acids or with their esters, which would you prefer? Why?

24. How are fats related to fatty acids? What is saponification and what chemical substances result from it?

25. what are primary, secondary, and tertiary amines? Is each class acidic, basic, both, or neither?

26. Why can there be primary, secondary, tertiary, and quarternary ammonium ions, but no quarternary amines?

27. In what way is aniline similar to the phenolate ion, and phenol similar to the anilinium ion?

28. what is an amino acid? In what sense is it an acid? A base?

29. Is an amino acid in aqueous solution charged? If so, where are the charges?