Question

1st attempt M See Periodic Table Two liquids - one polar, one nonpolar - have the same molar mass. Which one has the higher boiling point? Choose one: A. The polar liquid will have the higher boiling point, since its molecules have dipole-dipole interactions. B. They will have similar boiling points, since the dispersion forces depend upon molar mass. C. The nonpolar liquid will have the higher boiling point, since its molecules are more loosely held together. D. The nonpolar liquid will have the higher boiling point, since the polar molecules will repel each other and lower the boiling point. E. It is impossible to say without additional information. 17 OF 27 QUESTIONS COMPLETED < 15/27 > SUBMIT

Answer 1

Aly) past 1 we know that polae molecules have dipole - dipole in teractions that can between them. These are attractive forces that tend to attract the changed end of One molecule (posptine negative) to oppositely changed end of another polar molecule. Thus, more eneegy is required to seperate the molecules. Therefore, polar liquids have high bolling points. On the other hand, hon polar molecules containing anly weak attractive forces have low boiling points Answer is (A).