2006-09-26 09:16:45 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
Because the vacuum reduces the pressure above the solution, and the boiling point is lowered (boiling point is defined to be the temperature where the vapor pressure of the solution equals the pressure above the solution).
Ether will still evaporate quickly just in warm water, as it has a boiling point of 34 C, but it will evaporate faster under vacuum (as will all solvents), as in a rotary evaporator.
2006-09-26 09:24:34 · answer #1 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋
the ether evaporates faster in warm water bath and vacuum suction than in just warm water bath since vacuum suction lowers the vapour pressure of ether and so its boiling point and so ether evaporates faster.
2006-09-26 17:09:52 · answer #2 · answered by charles great 2 · 0⤊ 0⤋
has to do with the pressure at the surface where the ether is evaporating. normal atmospheric pressure will keep ether in a liquid state longer, requiring a higher temp to convert to gas. look at a 3 phase diagram
2006-09-26 16:25:28 · answer #3 · answered by John H 3 · 0⤊ 0⤋
Yes because the suction reduces the air pressure.
2006-09-26 16:25:28 · answer #4 · answered by The First Dragon 7 · 0⤊ 0⤋