Coconut oil contains a mixture of compounds - Scottish Highers Chemistry - Question 4 - 2022
Question 4
Coconut oil contains a mixture of compounds.
(a) Propyl octanoate is a compound found in coconut oil.
(i) Name the functional group in propyl octanoate.
(ii) Draw... show full transcript
Worked Solution & Example Answer:Coconut oil contains a mixture of compounds - Scottish Highers Chemistry - Question 4 - 2022
Step 1
Name the functional group in propyl octanoate.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The functional group in propyl octanoate is an ester group, denoted as -COOR, where R represents the hydrocarbon chain.
Step 2
Draw a structural formula for the carboxylic acid formed by hydrolysis of propyl octanoate.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The structural formula for the carboxylic acid formed by hydrolysis of propyl octanoate is:
O
||
H3C - C - OH
|
H
|
CH2
|
CH3
This represents octanoic acid.
Step 3
Suggest a name for the other product.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The other product of the hydrolysis reaction of propyl octanoate is propanol, an alcohol consisting of three carbon atoms.
Step 4
Using the graph and the information in the table, predict the number of carbons in glyceryl trilaurate.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
From the table and the graph, glyceryl trilaurate is predicted to have 35 - 45 carbons based on its retention time and comparison with the other compounds.
Step 5
Identify the compound listed in the table which is the most unsaturated.
97%
117 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The most unsaturated compound listed in the table is glyceryl trilonoleate, which has multiple double bonds in its fatty acid chain.
Step 6
State how emulsifiers are made from edible oils.
97%
121 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Emulsifiers are made from edible oils by reacting oils with glycerol, resulting in compounds that possess both hydrophilic and hydrophobic properties.
Step 7
Explain fully how emulsifiers prevent non-polar and polar liquids from separating into layers.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Emulsifiers have two parts: a hydrophilic (water-attracting) head and a hydrophobic (water-repelling) tail. The hydrophilic part interacts with polar liquids while the hydrophobic part interacts with non-polar liquids, allowing for stabilization of the mixture and preventing separation into layers.
Join the Scottish Highers students using SimpleStudy...
97% of Students
Report Improved Results
98% of Students
Recommend to friends
100,000+
Students Supported
1 Million+
Questions answered
Other Scottish Highers Chemistry topics to explore
