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    2011 Scottish Higher

    One of the fatty acids produced by the hydrolysis of palm oil is linoleic acid, C17H31COOH . To which class (saturated, monounsaturated, polyunsaturated,) does this fatty acid belong?

    Also is this a knowledge question that we need to know, or is this a problem solving, I've never seen a question like this before

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    You need to work out the degree of unsaturation i.e. the number of double bonds. I'm honestly not sure how you're taught to do this in school now but how I do it is use the equation (2+2C+N-X-H)/2. The letter indicates the number of that atom in the structure (X is halogens).

    For linoleic acid it's (2+36+0-0-32)/2 = 3

    With 3 degrees of unsaturation it counts as polyunsaturated.
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    Cheers kyri! I've never seen or been taught this before so thanks!
 
 
 
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