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Why does water have an unusually low vapor pressure for a liquid?
Wiki User
∙ 11y ago
Because the water molecule is polar (which is to say, it has positive and negative poles) water molecules attract each other more than most other molecules of liquids have for each other. This creates a phenomenon called surface tension. Water molecules which travel freely within the body of water, meet a kind of barrier at the surface, because of this attraction to other water molecules. Hence, water does not evaporate as easily as most liquids.
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoWater is a highly polar molecule, with a positive end and a negative end. As a result, there is an unusual degree of attraction between water molecules, and a correspondingly low vapor pressure.
Wiki User
∙ 9y agoVapor pressure it the pressure exerted by the vapor molecules. Water has a low vapor pressure because of the high amount of energy needed to break the hydrogen bonds.
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Is liquid water a water vapor?
No: Vapor is defined as the gas phase of a substance that is mostly solid or liquid at equilibrium at standard temperature and pressure. Therefore, a liquid itself is never a vapor, but the liquid is in equilibrium with a vapor phase that contains the same chemical substance.
What is phase change temperature for Isopropyl alcohol from steam to liquid?
Properly speaking, you should say vapor to liquid; "steam" specifically means water vapor. The answer depends on the pressure, but at standard pressure (about 101 kPa) the boiling point (liquid to vapor) of 2-propanol is 82.5 degrees Celsius, and the condensation point (vapor to liquid) is the same.
Liquid water is changed to water vapor by the process of Water vapor forms into clouds by the process of?
Liquid water is changed to water vapor by the process of evaporation (or boiling)Water vapor forms into clouds (liquid droplets) by the process of condensation
When does dew points occur?
The dew point is the temperature below which, water vapor (at a constant pressure) will condense into liquid water.
What does Turning liquid water into water vapor mean?
Order. Solid, liquid,gas/vapor. So It's when Liquid converts into a gas/vapor.
5 If you changed liquid water to water vapor in a pressure cooker what volume would the water vapor occupy?
The answer would depend on the pressure attained by the cooker.
Is liquid water a water vapor?
No: Vapor is defined as the gas phase of a substance that is mostly solid or liquid at equilibrium at standard temperature and pressure. Therefore, a liquid itself is never a vapor, but the liquid is in equilibrium with a vapor phase that contains the same chemical substance.
Why does plain water boil faster then salt water?
A liquid boils when the vapor pressure of the liquid is equal to the atmospheric pressure. The presence of salt in the water reduces the vapor pressure of the water at the temperature at which plain or distilled water will boil. Since the temperature of the salt water must be higher to reach the same vapor pressure as the atmosphere, it takes longer to boil.
What is the meaning of boiling in science terms?
Actually boiling is a point where the vapour pressure of any liquid (example: water) becomes equal to the surrounding pressure.
How is vapor water different from liquid water?
Water vapor is different from liquid water because water vapor is a gas, and liquid water is a liquid.
What does barometric pressure have to do with evaporation?
Above the surface of liquid water is a layer of water vapor. It has pressure. The atmosphere also has pressure. It pushes against the water vapor. The water vapor pushes against the atmosphere. It is called vapor pressure. It is related to temperature. When the vapor pressure equals barometric pressure, water boils. Normally this occurs at 100C or 212F. If you reduce the barometric pressure, you can reduce the boiling point of water. So when the barometric pressure is lower, the water vapor above the water has an easier time mixing with the atmosphere. As it mixes with the atmosphere, it is replaced by vapor from the water. It evaporates.
When the vapor pressure of a liquid is equal to the atmospheric pressure the liquid .?
it begins to boil - Monsy
What causes liquid water to turn into vapor water?
Increased heat or reduced pressure or both.
What is The process in which water in liquid form on the surface is heated and changed to vapor form?
the simple answer is boiling. when the vapor pressure of the liquid matches or exceeds the pressure on the liquid it will turn to vapor. a pot of water on a stove at sea level will boil,or vaporize, when the vapor pressure meets or exceed 14.7 psi, or atmospheric pressure. this as we know is reached at 212 degrees F, or 100 deg C. as the pot is elevated the temperature to boil is reduced due to the reduced atmospheric pressure at a given elevation. a typical lab experiment hooks a vacuum pump up to a container of water, and at some level of vacuum the water will boil, or vaporize, with no increase in temperature required; only by decreasing the pressure on the liquid to the vapor pressure.
The vapor pressure of CO2 is lower than the vapor pressure of water?
No, the vapor pressure of CO2 would be higher. Think of it like this, if you compress the molecules in gas enough, they will be close enough together to form a liquid. Both CO2 and water can exist as liquids and gas. At atmospheric pressure (14.7psi) or normal everyday pressure, water is a liquid and CO2 is a gas. This means that 14.7psi is not enough pressure to compress CO2 into the liquid state. Therefore, CO2 has a higher vapor pressure because it requires more pressure to become a liquid. Looking at it from the other side, if you had extremely high pressure where CO2 and water were both liquids and you started lowering the pressure, CO2 would become a vapor first once you went below a certain high pressure, and water wouldn't become a gas until you went well below atmospheric pressure.
Dissolving an electrolyte in water results in the formation of?
a decrease in the vapor pressure of the liquid
How is water vapor diffrent from liquid water?
Water Vapor is technically a gas and Liquid water is obviously a liquid.
