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What is ideas about vapour pressure to explain how impurities increase the boiling point of water?
Wiki User
∙ 6y ago
The boiling point is the point at which the vapor pressure of the liquid reaches atmospheric pressure. So, if you add impurities (solutes) to the pure liquid, the theory is that those molecules get in the way of the solvent molecules, and at the surface that results in a LOWER vapor pressure of the liquid. This then results in an INCREASE in the boiling point, because remember that boiling point is when vapor pressure = atmospheric pressure.
Wiki User
∙ 6y ago
Wiki User
∙ 13y agoBy adding impurities to a pure liquid, it becomes difficult for the liquid molecules to escape the solution and contribute the vapour pressure so vapour pressure decreases
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Explain how a change in temperature affects the pressure inside a container?
On an atomic scale, atoms are constantly vibrating. This vibration along with the electronic orbitals of the atom limit the minimum distance between two atoms. With increase in temperature the amplitude of this vibration increases. This leads to an increase in the minimum distance. This increase in the minimum distance manifests itself as an increase in the volume at a macroscopic scale.
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Most solutions have a HIGHER boiling point than the pure solvent. A solution with a lower boiling point than the solvent has formed an azeotrope.
What happens to the boiling point when you add sugar?
The boiling point of water depends on the amount of pressure on the individual molecules ( particles that make up water) so adding something different(like sugar) changes the pressure because the molecules are modified. The concentration of a solution ( how dense it is) also changes things, namely, the less pure a substance is, the higher it's boiling point is . If you are finding this hard to understand, think of the standard cordial available from your local supermarket. This is concentrated: You add more water to make it drinkable. Things like washing detergent or powder also advertise being more dense because you only have to use one spoonful to get the same results. To explain in more detail: Sugar's 'molecular weight" is three times that of salt, and it doesn't split into different particles when dissovled wheras salt does. With sugar, for every 180grams added to the water, the boiling point rises half a degree celcius.(Normal water boils at 100degrees celcius) For more info, visit the related links.
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it might decrease or increase depends on the impurities added.:D
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If temperature increases, either the volume or the pressure must increase. Since you have limited the volume by closing the container, pressure must increase.
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Since the temperature is increased, the molecules start moving to and fro... which tends increase in speed of the molecule.. such that the increase in temperature is directly proportional to the speed of the molecules by which the pressure will also increase...
Explain why increasing the temperature of a gas in closed rigid container causes the pressure in the container to increase?
Because the pressure increases The real answer is: Charles's Law. He found that if you increase the temperature of a constant pressure the volume increases also.
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Yes. In general, higher altitudes mean lower atmospheric pressure. Lower atmospheric pressure means lower boiling points.
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Iodine can sublime, i.e. change directly from solid to gas, at normal room pressure as long as the pressure is right, the substance can sublime
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Why is water boil in the mountain faster than low place please explain science approach?
Some say, It's colder in the mountain than at lower places so the water shouldn't boil but, the pressure is higher there. The boiling point decreases so the water may be boiling but not as hot as it is in the lower regions. the higher the area, the higher the atmospheric pressure and the vapour pressure decreases thus create a lower boiling point.
