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Question
Which of the following pairs have high melting points?
Which of the following pairs have high melting points?
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Solution
The correct option is A Palmitic acid and stearic acid
Saturated fatty acids are saturated with H. In between the carbon atoms, they have single bonds only. They don’t have any double bonds which provides them with high melting points (MP). They are mostly solids at room temperature (RT). They are obtained mostly from animals. They are found in butter and ghee. They include palmitic acid (16C), stearic acid (18c) and arachidic acid (20C).
Unsaturated fatty acids have single or multiple double bonds in between carbon atoms. Due to the presence of double bonds, they have lower MP. They are mostly liquids at room temperature. They are mostly obtained from plants. They are found in sunflower oil, olive oil. They include arachidonic acid (20C), linoleic acid, linolenic acid.
Saturated fatty acids are saturated with H. In between the carbon atoms, they have single bonds only. They don’t have any double bonds which provides them with high melting points (MP). They are mostly solids at room temperature (RT). They are obtained mostly from animals. They are found in butter and ghee. They include palmitic acid (16C), stearic acid (18c) and arachidic acid (20C).
Unsaturated fatty acids have single or multiple double bonds in between carbon atoms. Due to the presence of double bonds, they have lower MP. They are mostly liquids at room temperature. They are mostly obtained from plants. They are found in sunflower oil, olive oil. They include arachidonic acid (20C), linoleic acid, linolenic acid.
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