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Vapor pressure

Index Vapor pressure

Vapor pressure or equilibrium vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system. [1]

76 relations: Acetaldehyde, American Meteorological Society, Antoine equation, Argon, Atmosphere (unit), Atmospheric pressure, Azeotrope, Boiling point, Brine, Bubble (physics), Butane, Carbon dioxide, Carbonyl sulfide, Celsius, Chloromethane, Clausius–Clapeyron relation, Condensation, Crystal, Dry ice, Enthalpy of fusion, Ethanol, Ethylene glycol, Evaporation, Formaldehyde, Freon, Frostburg State University, Fugacity, Gas constant, Humidity, Inhalational anaesthetic, International System of Units, Isoteniscope, Knudsen cell, Lee–Kesler method, London dispersion force, Maryland, Meteorology, Methyl isobutyl ketone, Millimeter of mercury, Mole fraction, Naphthalene, Newton (unit), Nitrogen, Nitrous oxide, Osmotic coefficient, Oxygen, Partial pressure, Pascal (unit), Perry's Chemical Engineers' Handbook, Phase (matter), ..., Pressure, Propane, Propanol, Raoult's law, Reid vapor pressure, Relative humidity, Relative volatility, Saturation vapor density, SI derived unit, Square metre, Sublimation (phase transition), Thermodynamic activity, Thermodynamic equilibrium, Thermogravimetric analysis, Torr, Triple point, True vapor pressure, Tungsten, Vapor, Vapor pressures of the elements (data page), Vapor–liquid equilibrium, Vapour pressure of water, Volatility (chemistry), Water, Water vapor, Xenon difluoride. Expand index (26 more) »


Acetaldehyde (systematic name ethanal) is an organic chemical compound with the formula CH3CHO, sometimes abbreviated by chemists as MeCHO (Me.

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American Meteorological Society

The American Meteorological Society (AMS) is the premier scientific and professional organization in the United States promoting and disseminating information about the atmospheric, oceanic, and hydrologic sciences. Its mission is to advance the atmospheric and related sciences, technologies, applications, and services for the benefit of society.

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Antoine equation

The Antoine equation is a class of semi-empirical correlations describing the relation between vapor pressure and temperature for pure components.

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Argon is a chemical element with symbol Ar and atomic number 18.

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Atmosphere (unit)

The standard atmosphere (symbol: atm) is a unit of pressure defined as.

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Atmospheric pressure

Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth (or that of another planet).

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An azeotrope (gK, US) or a constant boiling point mixture is a mixture of two or more liquids whose proportions cannot be altered or changed by simple distillation.

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Boiling point

The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals the pressure surrounding the liquid and the liquid changes into a vapor.

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Brine is a high-concentration solution of salt (usually sodium chloride) in water.

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Bubble (physics)

A bubble is a globule of one substance in another, usually gas in a liquid.

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Butane is an organic compound with the formula C4H10 that is an alkane with four carbon atoms.

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Carbon dioxide

Carbon dioxide (chemical formula) is a colorless gas with a density about 60% higher than that of dry air.

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Carbonyl sulfide

Carbonyl sulfide is the chemical compound with the linear formula OCS.

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The Celsius scale, previously known as the centigrade scale, is a temperature scale used by the International System of Units (SI).

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Chloromethane, also called methyl chloride, Refrigerant-40, R-40 or HCC 40, is a chemical compound of the group of organic compounds called haloalkanes.

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Clausius–Clapeyron relation

The Clausius–Clapeyron relation, named after Rudolf Clausius and Benoît Paul Émile Clapeyron, is a way of characterizing a discontinuous phase transition between two phases of matter of a single constituent.

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Condensation is the change of the physical state of matter from gas phase into liquid phase, and is the reverse of vapourisation.

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A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

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Dry ice

Dry ice, sometimes referred to as "cardice" (chiefly by British chemists), is the solid form of carbon dioxide.

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Enthalpy of fusion

The enthalpy of fusion of a substance, also known as (latent) heat of fusion, is the change in its enthalpy resulting from providing energy, typically heat, to a specific quantity of the substance to change its state from a solid to a liquid, at constant pressure.

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Ethanol, also called alcohol, ethyl alcohol, grain alcohol, and drinking alcohol, is a chemical compound, a simple alcohol with the chemical formula.

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Ethylene glycol

Ethylene glycol (IUPAC name: ethane-1,2-diol) is an organic compound with the formula (CH2OH)2.

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Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gaseous phase before reaching its boiling point.

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No description.

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Freon is a registered trademark of The Chemours Company, which uses it for a number of halocarbon products.

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Frostburg State University

Frostburg State University (FSU) is a public university in Frostburg, Maryland.

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In chemical thermodynamics, the fugacity of a real gas is an effective partial pressure which replaces the mechanical partial pressure in an accurate computation of the chemical equilibrium constant.

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Gas constant

The gas constant is also known as the molar, universal, or ideal gas constant, denoted by the symbol or and is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole, i.e. the pressure-volume product, rather than energy per temperature increment per particle.

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Humidity is the amount of water vapor present in the air.

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Inhalational anaesthetic

An inhalational anaesthetic is a chemical compound possessing general anaesthetic properties that can be delivered via inhalation.

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International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

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An Isoteniscope is a device used to measure the vapor pressure of liquids.

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Knudsen cell

In crystal growth, a Knudsen cell is an effusion evaporator source for relatively low partial pressure elementary sources (e.g. Ga, Al, Hg, As).

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Lee–Kesler method

The Lee–Kesler method allows the estimation of the saturated vapor pressure at a given temperature for all components for which the critical pressure Pc, the critical temperature Tc, and the acentric factor ω are known.

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London dispersion force

London dispersion forces (LDF, also known as dispersion forces, London forces, instantaneous dipole–induced dipole forces, or loosely van der Waals forces) are a type of force acting between atoms and molecules.

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Maryland is a state in the Mid-Atlantic region of the United States, bordering Virginia, West Virginia, and Washington, D.C. to its south and west; Pennsylvania to its north; and Delaware to its east.

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Meteorology is a branch of the atmospheric sciences which includes atmospheric chemistry and atmospheric physics, with a major focus on weather forecasting.

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Methyl isobutyl ketone

Methyl isobutyl ketone (MIBK) is the organic compound with the formula (CH3)2CHCH2C(O)CH3.

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Millimeter of mercury

A millimeter of mercury is a manometric unit of pressure, formerly defined as the extra pressure generated by a column of mercury one millimetre high and now defined as precisely pascals.

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Mole fraction

In chemistry, the mole fraction or molar fraction (xi) is defined as the amount of a constituent (expressed in moles), ni, divided by the total amount of all constituents in a mixture (also expressed in moles), ntot: The sum of all the mole fractions is equal to 1: The same concept expressed with a denominator of 100 is the mole percent or molar percentage or molar proportion (mol%).

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Naphthalene is an organic compound with formula.

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Newton (unit)

The newton (symbol: N) is the International System of Units (SI) derived unit of force.

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Nitrogen is a chemical element with symbol N and atomic number 7.

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Nitrous oxide

Nitrous oxide, commonly known as laughing gas or nitrous, is a chemical compound, an oxide of nitrogen with the formula.

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Osmotic coefficient

An osmotic coefficient φ is a quantity which characterises the deviation of a solvent from ideal behaviour, referenced to Raoult's law.

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Oxygen is a chemical element with symbol O and atomic number 8.

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Partial pressure

In a mixture of gases, each gas has a partial pressure which is the hypothetical pressure of that gas if it alone occupied the entire volume of the original mixture at the same temperature.

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Pascal (unit)

The pascal (symbol: Pa) is the SI derived unit of pressure used to quantify internal pressure, stress, Young's modulus and ultimate tensile strength.

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Perry's Chemical Engineers' Handbook

Perry's Chemical Engineers' Handbook (also known as Perry's Handbook, Perry's, or The Chemical Engineer's Bible) was first published in 1934 and the most current eighth edition was published in October 2007.

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Phase (matter)

In the physical sciences, a phase is a region of space (a thermodynamic system), throughout which all physical properties of a material are essentially uniform.

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Pressure (symbol: p or P) is the force applied perpendicular to the surface of an object per unit area over which that force is distributed.

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Propane is a three-carbon alkane with the molecular formula C3H8.

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There are two isomers of propanol.

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Raoult's law

Raoult's law (law) is a law of thermodynamics established by French chemist François-Marie Raoult in 1887.

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Reid vapor pressure

Reid vapor pressure (RVP) is a common measure of the volatility of gasoline.

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Relative humidity

Relative humidity (RH) is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature.

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Relative volatility

Relative volatility is a measure comparing the vapor pressures of the components in a liquid mixture of chemicals.

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Saturation vapor density

Saturation vapor density (SVD) is a concept closely tied with saturation vapor pressure (SVP).

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SI derived unit

SI derived units are units of measurement derived from the seven base units specified by the International System of Units (SI).

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Square metre

The square metre (International spelling as used by the International Bureau of Weights and Measures) or square meter (American spelling) is the SI derived unit of area, with symbol m2 (Unicode character). It is the area of a square whose sides measure exactly one metre.

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Sublimation (phase transition)

Sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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Thermodynamic activity

In chemical thermodynamics, activity (symbol) is a measure of the "effective concentration" of a species in a mixture, in the sense that the species' chemical potential depends on the activity of a real solution in the same way that it would depend on concentration for an ideal solution.

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Thermodynamic equilibrium

Thermodynamic equilibrium is an axiomatic concept of thermodynamics.

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Thermogravimetric analysis

Thermogravimetric analysis or thermal gravimetric analysis (TGA) is a method of thermal analysis in which the mass of a sample is measured over time as the temperature changes.

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The torr (symbol: Torr) is a unit of pressure based on an absolute scale, now defined as exactly of a standard atmosphere (101.325 kPa).

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Triple point

In thermodynamics, the triple point of a substance is the temperature and pressure at which the three phases (gas, liquid, and solid) of that substance coexist in thermodynamic equilibrium.

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True vapor pressure

True vapor pressure (TVP) is a common measure of the volatility of petroleum distillate fuels.

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Tungsten, or wolfram, is a chemical element with symbol W (referring to wolfram) and atomic number 74.

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In physics a vapor (American) or vapour (British and Canadian) is a substance in the gas phase at a temperature lower than its critical temperature,R.

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Vapor pressures of the elements (data page)

No description.

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Vapor–liquid equilibrium

In thermodynamics and chemical engineering, the vapor–liquid equilibrium (VLE) describes the distribution of a chemical species between the vapor phase and a liquid phase.

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Vapour pressure of water

The vapour pressure of water is the pressure at which water vapour is in thermodynamic equilibrium with its condensed state.

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Volatility (chemistry)

In chemistry and physics, volatility is quantified by the tendency of a substance to vaporize.

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Water is a transparent, tasteless, odorless, and nearly colorless chemical substance that is the main constituent of Earth's streams, lakes, and oceans, and the fluids of most living organisms.

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Water vapor

No description.

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Xenon difluoride

Xenon difluoride is a powerful fluorinating agent with the chemical formula, and one of the most stable xenon compounds.

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[1] https://en.wikipedia.org/wiki/Vapor_pressure

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