You are watching: Why does water have a higher boiling point than ethanol
(Initial post by smetin92) i think i understand a small bit:ethanol is a slightly bigger molecule than water, so in a addressed volume, fewer ethanol molecules can fit right into the room, so fewer H bonds develop in between the molecules. however, for water, they are smaller sized the reverse cn be seen. i dont what else to say in regards to dipoles etc....
the hydrogen bonding between the molecules of water is better than the bonding in between the molecules of ethanol which indicates more warm energy is jiyuushikan.orgmpelled to break the bonds of molecules of water which leads to the boost in jiyuushikan.orgllision of the water molecules there by raising the boiling point.
for water all 3 molecules are able to form hydrogen bonds with surrounding molecules. Ethanol has acquired 2 carbons, lots of hydrogen, and also simply one oxygen - in laymans term it is huge as youve shelp. As you shelp, its all around the dipole minute of water, i.e. higher internal power hence waters high certain warmth capacity (energy jiyuushikan.orgmpelled to put it up by 1°C)
(Initial post by iceman_jondoe) the hydrogen bonding in between the molecules of water is better than the bonding between the molecules of ethanol which indicates more warmth energy is forced to break the bonds of molecules of water which leads to the increase in jiyuushikan.orgllision of the water molecules tbelow by boosting the boiling suggest.
I execute not understand what you intend by the hydrogen bonding is higher? execute you intend tbelow are even more of them, or they are stronger?
water deserve to form 2 hydrogen bonds due to tright here being 2 delta posotive hydrogens incurred by the electronegative oxygen atom. Water therefore has even more permanent-permanent dipole attractions which take more energy to break than the power required to break the intermolecular bonds in ethanol. Thus water has a higher boiling allude. hope this helps.
This discussion is eight years old!Anyhoo, to have H-bonding, you require an H atom attached to N or O or F. This leads to exceptionally polar N-H or O-H or F-H bonds. Leading to a very delta + H atom. This is then attracted to the lone pair on an N or O or F on an additional molecule.C is not electronegative enough to produce a big enough delta H, so can"t develop what you would speak to an H-bond to one more molecule - water or not.
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