What is the effect of pressure on boiling point

Asked by admin @ 11/08/2021 in Chemistry viewed by 314 People

Answered by admin @ 11/08/2021

All liquids, at any temperature, exert a certain vapor pressure. The vapor pressure can be thought of as the degree to which the liquid molecules are escaping into the vapor phase. The vapor pressure increases with temperature, because at higher temperature the molecules are moving faster and more able to overcome the attractive intermolecular forces that tend to bind them together. Boiling occurs when the vapor pressure reaches or exceeds the surrounding pressure from the atmosphere or whatever else is in contact with the liquid.At standard atmospheric pressure (1 atmosphere = 0.101325 MPa), water boils at approximately 100 degrees Celsius. That is simply another way of saying that the vapor pressure of water at that temperature is 1 atmosphere. At higher pressures (such as the pressure generated in a pressure cooker), the temperature must be higher before the vapor pressure reaches the surrounding pressure, so water under pressure boils at a higher temperature. Similarly, when the surrounding pressure is lower (such as at high altitudes), the vapor pressure reaches that pressure at a lower temperature. For example, in the Denver, Colorado area of the U.S. where the elevation above sea level is approximately one mile (1600 meters), the atmospheric pressure is about 83% of a standard atmosphere, and water boils at approximately 95 degrees Celsius.The relationship between vapor pressure and temperature (or, looked at in the reverse direction, between boiling temperature and pressure) is called the vapor pressure curve. Water's vapor pressure curve is of great importance, since it determines the relationship between temperature and pressure in any process where water is going from a liquid to a vapor state or vice-versa. Such processes are important both in industry (for example in steam power generation where water is made into steam in boilers and eventually condensed after running through turbines)

What is the effect of pressure on boiling point

Similar Questions

The boiling point of a solution of sugar water is

When pressure is increased the melting point of ice

Calculate the total effective resistance between points a and b

The freezing point of water at 1 atm pressure is

At what temperature is the boiling point of this substance

What is the boiling point of acetone

Which of these solutes raises the boiling point of water the most?

What was the effect of the louisiana purchase points 3

The boiling point of benzene is 353.23 k

Boiling point of distilled water

What are the freezing and boiling points of water

Effect of pressure on solubility of solid in liquid

Boiling point of water at 750mm hg is 99.63

The boiling point of water at sea level is

Sucrose melting point and boiling point

Most viewed questions in Chemistry

Discuss sn2 mechanism of methyl bromide using aqueous koh

Comparing lactose percentage between whole milk and powdered milk

Lewl letpa

50 examples of unbalanced chemical equations with answers

Chromium metal is immersed in an aqueous solution of cobalt(ii) chloride.

Prepare a chart giving detailed information of carbon compounds

Which 1 mole sample has the least entropy

If you are given the assignment to cut raw poultry

Effect of succinic acid on cst of phenol water system

The reaction between aluminium powder and anhydrous barium nitrate

Cnh4 lewis structure

2 3 dihydroxypropanal

Select true statements about the pentose phosphate pathway

Crossword puzzle on carbon and its compounds class 10

Ionic bond calculator