Figure 1 shows the melting temperature vs chain length of stearic acid, i.e. octadecanoic acid. 90 - Stearic acid 70 60 - S0 - 40 30 Room temperature 20 10 -10 -20 4 6 8 10 12 14 16 18 20 22 24 Number of carbon atoms Figure 1 (i) What is the appearance of stearic acid at room temperature? (ii) Where would the melting temperatures of the following fatty acids, oleic acid (cis-9- Octadecenoic), linoleic acid (cis,cis-9,12-Octadecadienoic), and linolenic acid (All cis- 9,12,15-Octadecatrienoic), fall on the Figure 1? Plot and indicate their relative locations. Briefly explain why.

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Chapter1: Biochemistry: An Evolving Science
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Figure 1 shows the melting temperature vs chain length of stearic acid, i.e. octadecanoic acid.
90
80
- Stearic acid
70
60
40
30
Room temperature
20
10
-10
-20
4 6 8 10 12 14 16 18 20 22 24
Number of carbon atoms
Figure 1
(i)
What is the appearance of stearic acid at room temperature?
(ii)
Where would the melting temperatures of the following fatty acids, oleic acid (cis-9-
Octadecenoic), linoleic acid (cis,cis-9,12-Octadecadienoic), and linolenic acid (All cis-
9,12,15-Octadecatrienoic), fall on the Figure 1? Plot and indicate their relative
locations. Briefly explain why.
Temperature ("C)
Transcribed Image Text:Figure 1 shows the melting temperature vs chain length of stearic acid, i.e. octadecanoic acid. 90 80 - Stearic acid 70 60 40 30 Room temperature 20 10 -10 -20 4 6 8 10 12 14 16 18 20 22 24 Number of carbon atoms Figure 1 (i) What is the appearance of stearic acid at room temperature? (ii) Where would the melting temperatures of the following fatty acids, oleic acid (cis-9- Octadecenoic), linoleic acid (cis,cis-9,12-Octadecadienoic), and linolenic acid (All cis- 9,12,15-Octadecatrienoic), fall on the Figure 1? Plot and indicate their relative locations. Briefly explain why. Temperature ("C)
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