molar volume


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molar volume,

the volume occupied by a molemole,
in chemistry, a quantity of particles of any type equal to Avogadro's number, or 6.02×1023 particles. One gram-molecular weight of any molecular substance contains exactly one mole of molecules.
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 of a substance at STPSTP
or standard temperature and pressure,
standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0°C; or 273.15°K;.
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. According to Avogadro's law, at a given temperature and pressure a given volume of any gas contains the same number of molecules. At STP 1 mole of gas occupies 22.414 liters. This volume is what is usually meant by the molar volume, although one can also speak of molar volumes of substances that are not gaseous at STP. Since at STP water occupies very nearly 1 cc per gram, and since 1 mole of water molecules weighs very nearly 18 grams, the molar volume of water is about 18 cc. The molar volume of osmium, one of the densest metals, is only about 8.4 cc; that of beryllium is only about 4.86 cc.

molar volume

[′mō·lər ′väl·yəm]
(physical chemistry)
The volume occupied by one mole of a substance in the form of a solid, liquid, or gas. Also known as molal volume; mole volume.
References in periodicals archive ?
In addition, a lower molar volume of amino-denaturation silicone indicated a higher total reaction ratio.
Internal pressure, Acoustic Impedance, Relaxation time, Ultrasonic attenuation, Surface tension, Cohesive energy and Molar volume of Solution of Ethyl 4-(4-chlorophenyl)-6-methyl-2-thioxo- 1,2,3,4-tetrahydropyrimidine-5-carboxylate (1a) at 313 K.
For this reason, in a first approach, the molar volume of these sulfonamides was considered here as independent of co-solvent composition, and calculated according to the groups contribution method proposed by Fedors, R.
15 K, the molar volume of saturated ice is calculated using IAPWS-06 (IAPWS 2006) using the following equation
To use this model, the mole fraction, molar volume, and solubility parameter of each component in the mixture must be specified.
The third edition removes the molar volume approach to gases and treats reactions in aqueous solution before stoichiometry.
Where, N is the effective crosslink density, in moles of crosslink per unit volume, Vs = molar volume of the swelling solvent, Vr = volume fraction of polymer in the swollen gel (the degree of swelling found earlier), [chi] polymer-solvent interaction parameter (it was assumed that carbon black did not influence it).
3+] ion is mostly in four-fold and six-fold coordination and consequently molar volume of [Al.
Here, p denotes pressure, v the molar volume, T the absolute temperature, and R the universal gas constant.
Again, S provided an improvement over other strictly size-related measures, including a previous molar volume correlation on the same set with an r = 0.
The status bar displays structure properties, including density, molar volume, refractive index, dielectric constant and more.