View Single Post
  #4  
Old December 7th, 2010, 10:05
NanoMachine NanoMachine is offline
Member
 
Join Date: Jan 2010
Posts: 38
NanoMachine is on a distinguished road
Default

Short answer - yes.

Longer answer - yes, and hydrogen bonding is even more significant for water than for for alcohols.

Water only consists of H - O - H and so every atom in water takes part in hydrogen bonding. Hydrogen bonds are very "concentrated" in water. In alcohols the hydrogen bonds are restricted to the OH part of the molecule and the C - C and C - H don't take part in hydrogen bonding, diluting the hydrogen bonding effect compared with water.

For such a light molecule, water's boiling point is high, 100oC.

The much heavier ethanol boils at just 78.1oC because, although hydrogen bonding is important in helping ethanol molecules stick together, it's not as important as it is in water.
Reply With Quote