Question 29.SE.5: Draw the general structure of the main constituent of a soap...
Draw the general structure of the main constituent of a soap micelle and indicate the hydrophilic and hydrophobic regions.
Analyze We are asked to draw a schematic of the sodium or potassium salt of a fatty acid and indicate polar and non-polar regions.
Plan Since soaps are prepared from the carboxylate salt of a fatty acid, this question requires you to draw a long alkyl chain and a polar carboxylate head group.
Solve Using a simple circle for a head group and the line drawing of a long alkane, we get:
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