Compare omega-6 fatty acids with saturated fatty acids containing the same number of carbon atoms - VCE - SSCE Chemistry - Question 19 - 2023 - Paper 1
Question 19
Compare omega-6 fatty acids with saturated fatty acids containing the same number of carbon atoms.
Which one of the following statements is correct?
Omega-6 fatty ac... show full transcript
Worked Solution & Example Answer:Compare omega-6 fatty acids with saturated fatty acids containing the same number of carbon atoms - VCE - SSCE Chemistry - Question 19 - 2023 - Paper 1
Step 1
A. have lower densities than saturated fatty acids.
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Answer
Omega-6 fatty acids typically have lower densities than saturated fatty acids due to their unsaturated nature, which introduces kinks in their molecular structure, making them less tightly packed.
Step 2
B. have higher melting points than saturated fatty acids.
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Answer
This statement is incorrect. Omega-6 fatty acids generally have lower melting points than saturated fatty acids because the presence of double bonds results in a less stable structure.
Step 3
C. have more hydrogen atoms than saturated fatty acids.
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Answer
This is false. Saturated fatty acids have the maximum number of hydrogen atoms possible, while omega-6 fatty acids contain fewer due to the presence of double bonds.
Step 4
D. undergo substitution reactions more readily than saturated fatty acids.
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Answer
Omega-6 fatty acids, having double bonds, are more reactive to substitution reactions compared to saturated fatty acids, making this statement true.
