Why does ether evaporate before toluene?? I'm getting a little confused between what has higher boiling point and and what has higher melting point
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Evaporation
- Thread starter UFiA0389
- Start date
- Joined
- Jan 23, 2009
- Messages
- 898
- Reaction score
- 2
ether evaporates before toluene because it has a lower boiling point.
toluene bp is 110 C
ether or diethyl either is only about 34 C.
toluene has a melting point of -93 C
ether mp is -116 C
toluene has both a higher melting and boiling point than ether.
toluene bp is 110 C
ether or diethyl either is only about 34 C.
toluene has a melting point of -93 C
ether mp is -116 C
toluene has both a higher melting and boiling point than ether.
its a diethyl ether and toulene mixtureDid it say what kind of ether?
- Joined
- Jun 8, 2008
- Messages
- 331
- Reaction score
- 15
its a diethyl ether and toulene mixture
The higher it's molecular weight, the higher it's boiling point. Diethyl ether has 4 C and 1 O, while tolune has 7C.
So diethyl ether has molecular weight of aprox 64 and toluene 84. (Ignored the hydrogens)
Tolune has higher molecular weight, meaning it's boiling point is higher.
Things to consider for boiling point:
1) Molecular weight
2) Intermolecular force
Ionic > Hydrogen bonding > dipole dipole > Van der Waals dispersion forces.
Hydrogen bond are usually a good indicator that the boiling point is really high. Way you can remember is that water has a 100 degree celcius boilinlg point. Very high despite it's really low molecular weight.
3) Symmetry and branching