Which has higher boiling point? Hexanal or dipropyl ether?Based on which of the

Question

Which has higher boiling point? Hexanal or dipropyl ether?Based on which of the following criteria? A. One molecule can associate via dipole-dipoe interactions, and the other cannot. B. One molecule can associate via hydrogen bonds and the other cannot C. Both molecules have equivalent non-covalent interactions, but one molecule is more nonpolar than the other. D. Both molecules have equivalent non-covalent interactions, but one molecule has more of those interactions than the other. E. The two molecules have similar properties

Explanation / Answer

Boiling point of hexanal is 130-131 oC whereas dipropyl ether has boiling point 90 oC. So,  hexanal has higher boiling point than dipropyl ether. The >C=O bonds of aldehydes are more highly polarized into (+)>C-O(-) than are the C-O-C bonds of ethers.

Reason: A. One molecule can associate via dipole-dipoe interactions, and the other cannot.

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