2007-07-22 02:21:39 · 6 answers · asked by samuraihero1992 2 in Science & Mathematics ➔ Physics
It takes heat to evaporate any liquid. The heat is removed from whatever the liquid is touching, so that substance is cooled. The cooling from ether is substantial because its boiling point is lower than that of alcohol or water and it evaporates more rapidly, but we do feel cooling from alcohol, and cooling from water is what sweat is all about.
2007-07-22 02:27:57 · answer #1 · answered by anobium625 6 · 1⤊ 0⤋
The lower the boiling point of a liquid, the greater it's volatility, and the quicker it will vaporise.
Vapourisation requires heat energy. Ether, has a low boiling temperature and is a very volatile liquid.
Put some on your skin and the skin immediately feels cool due to the heat of vaporisation of the ether being removed from the skin.
2007-07-22 06:06:36 · answer #2 · answered by Norrie 7 · 0⤊ 0⤋
Ether causes cooling by absorbing the heat required for vaporization. When you heat a liquid while still in the liquid state, you add a certain amount of energy. This is called "sensible" heat, in other words, heat that causes a rise in the liquid's temperature. However, once you reach that liquid's boiling point, it absorbs "latent" or "hidden" heat, which is the amount of heat required to change the liquid into a gas at the same temperature. When a liquid is exposed to atmospheric pressure at a temperature at or above its boiling point, it will boil, absorbing latent heat until it cools to its boiling point, or until it all vaporizes. As it's taking heat from its environment, the solid objects (or liquid it may be in) lose sensible heat (because they are not at their freezing or boiling points). Since ether's boiling point is below normal room temperature, the ether will continue to boil until it either cools down to its boiling point or until its all evaporated. The amount of energy it absorbs from its environment will be determined by how much liquid ether evaporated. However, the final temperature will never be below ether's boiling temperature.
2007-07-25 19:25:41 · answer #3 · answered by Kevin S 7 · 0⤊ 0⤋
Because it evaporates quickly. The ether absorbs heat from the surface and as it evaporates it takes the heat so it has a cooling effect.
2007-07-22 02:28:44 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Ether, alcohol, acetone etc. are easily volatile substances that evaporate fast and so when applied to our skin, they evaporate by absorbing the heat from our skin, making it feel cooler.
2007-07-22 02:33:28 · answer #5 · answered by Swamy 7 · 0⤊ 0⤋
ETHER EVAPORATE IN LOW TEMPERATURE( TO EVAPORATE THE ETHER MOLECULES GET THE HEAT FROM SURROUNDING AND CAUSE COOLING.
2007-07-22 02:34:05 · answer #6 · answered by spicy 2 · 0⤊ 0⤋