## Perfil

Fecha de registro: 18 may 2022

###### Sobre...

There are two key methods used to convert volume to mass or mass to volume: the densities of the solutions involved, and the total volume. There are 3 different units of alcohol concentration : Volume, Mass and Molar. To convert between these units, you must know the density of ethanol-water mixtures and the total volume of the mixture. Alcohol concentration is the percentage of the entire mixture that is alcohol. For example, a 1 liter (1 gal) mixture of ethyl alcohol and water will have a volume of 1 liter (1 gal) and a concentration of 37.4% by volume. That 37.4% concentration is the same as 37.4% by mass. For volume-based alcohol-water calculations, we generally use Volume and by Volume (1 V = 1 L), as these use no units of mass. In addition, there are three other units for alcohol concentration : Volume, Mass, Molar. To convert between these, we need to know the density of ethanol-water mixtures in a Molar unit and the total volume. For a Molar unit to convert to a Volume unit, we use the Molar volume of a solution, which is called the molar volume of the alcohol. Since this is the reciprocal of the Molar mass of the alcohol, it does not need to be expressed in a particular unit. It is calculated using the following equation. Alcohol Molar volume is a function of Alcohol Molar Mass and the Temperature ( For more information about Molar volume, Molar mass, units and temperatures, see the help below. ) Molar volume of ethanol in water at standard temperature and pressure in Moles / Liter = (2.13 x Molar mass of ethanol) / 1.01 (2.13 x Molar mass of ethanol) = 1.0057 Molar mass of ethanol Alcohol Molar volume is a function of Alcohol Molar Mass and the Temperature For example, at room temperature and standard pressure, the molar volume of ethanol is 16.1 L / mol. ( 0.1613 liter / mole ) V'Ethanol = 1.0 L / mol V'Ethanol = 16.1 L / mol The molar volume of methanol is 25.2 L / mol, water is 18.1 L / mol and isopropanol is 36.6 L / mol Molar Volume of Ethanol (L/mol) = (