Model 1: Structures and boiling points of selected organic molecules Nitrogen bonding options: ཡིན་ན་ H amine amide H Functional Molecular Boiling Example Structure Weight Point Group H₂ H₂ Alkane 72 36°C H3C CH3 CH3 Amine (A) CH3 73 36°C H3C H2 H3C CH3 Amine (B) 73 56°C H₂ H2 NH₂ Amine (C) H3C CH 73 63°C -CH3 H₂ Amine (D) H3C Alcohol H3C 73 78°C NH2 EU H₂ H₂ 74 OH 118°C Carboxylic Acid H3C 74 141°C OH Amide H3C n=o 73 218°C NH₂
Model 1: Structures and boiling points of selected organic molecules Nitrogen bonding options: ཡིན་ན་ H amine amide H Functional Molecular Boiling Example Structure Weight Point Group H₂ H₂ Alkane 72 36°C H3C CH3 CH3 Amine (A) CH3 73 36°C H3C H2 H3C CH3 Amine (B) 73 56°C H₂ H2 NH₂ Amine (C) H3C CH 73 63°C -CH3 H₂ Amine (D) H3C Alcohol H3C 73 78°C NH2 EU H₂ H₂ 74 OH 118°C Carboxylic Acid H3C 74 141°C OH Amide H3C n=o 73 218°C NH₂
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
Related questions
Question
- Label each Amine (A–D) in Table 1 as primary, secondary, or tertiary.
- Which classes of
amines – primary, secondary, or tertiary – can participate in hydrogen bonding with other identical molecules? Discuss as a team, and record your consensus. - How many different combinations of hydrogen bonds are possible between the following two molecules? redraw the molecules, showing a hydrogen bond between them.
- Compare Amines A–D in Model 1. Discuss as a team, and explain why three of the amines have a higher boiling point than the
alkane . - One of the amines has the same boiling point as the alkane. Explain.
- Compare Amine (A) and Amine (B). Explain the difference in boiling point.
- Compare Amine (B) with amine (C). Explain the difference in boiling point.
- Compare Amine (C) with amine (D). Explain the difference in boiling point.
- Compare Amine (D) with the alcohol. Work as a team to explain the difference in boiling point.
- Compare the amide with the alcohol. Explain the difference in boiling point.
- Would you expect amines and amides with short carbon chains to be soluble in water? Work as a team to explain your answer. (Hint: Recall the solubility of
carboxylic acids discussed in CA 39.) - Which class of amine has the highest boiling point? Why?
- What was one strength of your team today? Why was this a strength?
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