The melting point of lauric acid, CH3(CH2) 10CO2H , is 43 C and the melting point of stearic acid (CH3(CH2) 16CO2H) is 69 C. Which of the following statements best explains why the melting point of lauric acid is lower than the melting point of stearic acid?
A) The hydrophobic tail of lauric acid is longer than the hydrophobic tail of stearic acid.
B) Stearic acid is soluble in water and lauric acid is not soluble in water.
C) Stearic acid is a fatty acid, whereas lauric acid is not a fatty acid.
D) The London force interactions are stronger in stearic acid than they are in lauric acid.
Correct Answer:
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