are the fatty acid propyl esters (biodiesel) formed in acid-catalysed esterification of octanoic acid with 1-propanol more or less polar than glycerol?

Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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are the fatty acid propyl esters (biodiesel) formed in acid-catalysed esterification of octanoic acid with 1-propanol more or less polar than glycerol?

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Step 1

A covalent molecule is more polar when it has more number of covalent bonds with higher electronegativity differences e.g O-H, N-H, F-H, C-O bonds, etc. 

Because higher the electronegativity difference, more is the polarity. 

Hence, first we have to draw the structure of both the molecules i.e the ester and glycerol. 

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