Question

Because water molecules are polar and carbon dioxide molecules are nonpolar,

A) water has a lower boiling point than carbon dioxide does.
B) attractions between water molecules are weaker than attractions between carbon dioxide molecules.
C) carbon dioxide cannot exist as a solid.
D) water has a higher boiling point than carbon dioxide does.

Answer 1

Because water molecules are polar and Carbon dioxide molecules are nonpolar : D. Water has higher boiling point than carbon dioxide does

Polar molecules have more bond compared to the non polar. which means it will take more energy to break polar molecules which resulted in higher boiling point

hope this helps

Answer 2

The correct is D.

Water is a polar molecule and it has polar bonds, which carry partially positive and partially negative charges. This polar bond increases the attraction between molecules of water and thus it requires a greater energy to break the bond between the molecules of water compare to carbon dioxide, which is a non polar molecule. Thus, water has a higher boiling point than carbon dioxide.