Question

The boiling points of the isomeric carbonyl compounds heptanal, 4-heptanone, and 2,4-dimethyl-3-pentanone are 155°C, 144°C, and 124°C, respectively. Suggest a possible explanation for the observed order. (Hint: Recall the effect of chain branching on the boiling points of isomeric alkanes, and how steric effects can influence the association of the molecules.)


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Answer 1

Explanation:

functional group. The C=O has a similar dipole moment whether at the end of a chain as in the aldehyde or in the middle of the chain