Answer: Hot and spicy foods contain molecules that

Chapter 14, Problem 14.32

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Hot and spicy foods contain molecules that stimulate pain-detecting nerve endings. Two such molecules are piperine and capsaicin: G D CHP (CH2)3 CH2 CH2 CH3 CH3 O O CHCH PCH C NO H H H O H O N H3CO O H C C H H CH CH CH HO H H B O a g h j i k l b c d f HH H HH H H H H H e G D G G G G D D B J A Piperine Capsaicin Piperine is the active compound in white and black pepper, and capsaicin is the active compound in chili peppers. The ring structures in piperine and capsaicin are shorthand notation. Each point where lines meet represents a carbon atom.a. Complete the Lewis structures for piperine and capsaicin, showing all lone pairs of electrons. b. How many carbon atoms are sp, sp2, and sp3 hybridized in each molecule? c. Which hybrid orbitals are used by the nitrogen atoms in each molecule? d. Give approximate values for the bond angles marked a through l in the above structures.