0
Why is high boiling substance often distilled at high reduced pressure?
Wiki User
∙ 8y agoWant this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is a vacuum distillation?
When pressure is reduced the boiling point will also reduce
What is the effect of decreased pressure on the boiling and freezing point?
As pressure decreases, the boiling point of water will also decrease. Backpackers camping in the high mountains are familiar with the phenomena when they get water boiling - and find that it is still only lukewarm because the atmospheric pressure at their high altitude is so low.
If sample of a liquid was boiled for twelve minutes During that time the boiling point remained constant and the volume was reduced to half Is the liquid a pure substance?
yes
What is boiling point of water at 6000ft?
The boiling point of water at sea level is 100 degrees Celsius (212 degrees F). The boiling point depends on a substance's vapor pressure, which in turn is dependent on pressure. So, at significant altitude (reduced pressure), water's boiling point drops. Decreased pressure at altitude lowers the temperature of boiling water by about six degrees C per 1000 meters (or about two degrees F per 1000 feet). This general formula can be used to estimate the boiling point at your altitude (for areas below sea level, add instead of subtract). For this reason, boxes of foods with boiling instructions will usually give 'high altitude cooking instructions.' The reason is that the temperature of boiling water is precisely 212 degrees Fahrenheit, and this is the temperature that the usual (sea level) directions expect. If the actual cooking temperature at your location, say at the top of a mountain, is only 192 degrees, then your food will need to cook significantly longer, if cooked 20 degrees cooler. This is also where the concept of the pressure cooker arose; cooks found that they could cook food hotter and faster using water, if the container was airtight enough to allow pressure to build.
The substance that accepts electrons from another substance is the?
In a redox reaction, the substance that accepts electrons is said to be the substance reduced. This substance is also likely the oxidizing agent, since oxidation is the loss of electrons.
Why Glycerin is distilled at reduced pressure?
glycerin is distilled at reduced pressure because it has boiling point of 290 degree celsius under atmospheric pressure it slightly decomposes but under reduced pressure it distills unchanged
What happens to the boiling point of a liquid if the pressure exerted on a surface is reduced?
The boiling point lowersas the pressure is lowered.
What is a vacuum distillation?
When pressure is reduced the boiling point will also reduce
What is the temperature at boiling point?
.The temperature at boiling point depend up on the vapour pressure. For example water boils at 100 degrees in atmospheric pressure ie, at 1 bar. But same water can boil at 40 degree celcius at -0.9 bar. That is , at reduced pressure a liquid boils at reduced temperature.So the temperature at boiling point depend up on the vapour pressure .
Why does the boiling temperature of water decrease when the water is under reduced pressure such as it is in a higher altitude?
Reduced pressure lessens the squeezing of molecules, which favors their tendency to separate and form vapor.
What benefit does one obtain by carrying out the distillation under reduced pressure?
lower temperature of "boiling point"
The reduced vapor pressure at high altitudes causes a liquid to boil at a?
The higher the vapor pressure of a liquid at a given temperature, the lower the normal boiling point (i.e., the boiling point at atmospheric pressure) of the liquid.
What is the effect of decreased pressure on the boiling and freezing point?
As pressure decreases, the boiling point of water will also decrease. Backpackers camping in the high mountains are familiar with the phenomena when they get water boiling - and find that it is still only lukewarm because the atmospheric pressure at their high altitude is so low.
What would be the effect on the boiling point of ethyl alcohol if the pressure were reduced during the distillation process?
It would decrease
If the pressure in a sealed container is reduced can boiling point of a fluid be also reduced?
Yes. You can, for example, boil water at room temperature if you apply a vacuum pump to the container. However, if it was ONLY a sealed container (reduce the pressure and then take the vacuum pump away), the vapor increases the pressure and the whole thing comes to equilibrium and stops boiling.
Does reduced vapor pressure at high altitudes causes a liquid to boil at a higher temperature?
The higher the vapor pressure of a liquid at a given temperature, the lower the normal boiling point (i.e., the boiling point at atmospheric pressure) of the liquid.
Relation between atmospheric pressure and boiling point?
As atmospheric pressure increase so does the boiling pont, when atmos. pressure decreases so does boiling point. A liquid boils when its vapor pressure equals atmospheric pressure.
