Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Solubility boiling point and

Melting and Boiling Points, Solubility, and Chromatographic Behavior... [Pg.379]

Polarity is a physical property of a compound, which relates other physical properties, e.g. melting and boiling points, solubility and intermolecular interactions between molecules. Generally, there is a direct correlation between the polarity of a molecule and the number and types of polar or nonpolar covalent bond that are present. In a few cases, a molecule having polar bonds, but in a symmetrical arrangement, may give rise to a nonpolar molecule, e.g. carbon dioxide (CO2). [Pg.4]

Modern inorganic chemistry is a quantitative science. Consequently, when performing experimental work, students must determine the yield of the substances obtained and certain constants such as the boiling points, solubility, and cryohydrate points, and also perform the required calculations with the use of the fundamentals of thermodynamics. [Pg.6]

The next main section deals with thermodynamic aspects. It starts by consideration of the intramolecular forces between heterocyclic molecules which influence melting and boiling points, solubility and chromatographic characteristics. This is followed by a section on stability and stabilization, including thermochemistry and conformation of the saturated ring systems, and then a discussion of aromaticity. [Pg.13]

Bhatnagar, R. P., P. Singh, and S. P. Gupta, Correlation of van der Waals Volume with Boiling Point, Solubility and Molar Refraction. Indian J. Chem., 1980 19B, 780-783. [Pg.60]

Polarity is a physical property of compounds which relates other physical properties such as melting and boiling points, solubility, and intermolecular interactions between molecules. [Pg.126]

Draw and name ethers and heterocyclic ethers, including epoxides. Explain the trends in their boiling points, solubilities, and solvent properties. [Pg.625]

Generic chemical class data are often relevant to assessing potential toxicity and should be a part of any evaluation. The relevant information includes structure-activity relationships and physical-chemical properties, such as melting point, boiling point, solubility, and octanol-water partition coefficient. Physical-chemical properties affect an agent s absorption, tissue distribution, biotransformation, and degradation in the body. [Pg.64]

After the IR spectrum has been interpreted, the structural characteristics of the unknown can be narrowed down to a few compounds in a specific category. For positive identification of an unknown, informa tion on the physical state, melting or boiling point, solubility, and the history of the compound should be obtained. The flame test should be done, and the... [Pg.3415]

The Merck Index Budavari, 1999) and the CRC Handbook of Chemistry and Physics (Lide, 2000) are useful sources on the chemical and physical properties of elements and compounds, including melting and boiling points, solubility and toxicity, etc. Manufacturers catalogues now include hazard data and disposal procedures. [Pg.15]

For strongly ionic compounds such as the alkali halides the closed-shell or rare gas approximation to the electronic structure of the ions is extremely accurate. Goldschmidt and Pauling have shown that for such compounds there exist strong correlations between many physical properties (crystal structure, bond lengths, compressibilities, heats of fusion and sublimation, melting and boiling points, solubility) and the ratio p = R of cation univalent radius to anion... [Pg.20]

Chakactkrisation of Unsaturatkd Aliphatic Hydrocarbons Unlike the saturated hydrocarbons, unsaturated aliphatic hydrocarbons are soluble in concentrated sulphuric acid and exhibit characteristic reactions with dUute potassium permanganate solution and with bromine. Nevertheless, no satisfactory derivatives have yet been developed for these hydrocarbons, and their characterisation must therefore be based upon a determination of their physical properties (boiling point, density and refractive index). The physical properties of a number of selected unsaturated hydrocarbons are collected in Table 111,11. [Pg.241]

The physical properties (boiling point solubility m water dipole moment) of alkynes resemble those of alkanes and alkenes... [Pg.382]

Specific rotation is a physical property of a substance, just as melting point, boiling point, density, and solubility ae. For exanple, the lactic acid obtained from milk is exclusively a single enantiomer. We cite its specific rotation in the form [a] =-1-3.8°. The temperature in degrees Celsius and the wavelength of light at which the measurement was made ae indicated as superscripts and subscripts, respectively. [Pg.288]

DNAPLs have higher densities than water, most between 1 and 2 g/mL, some are near 3 g/mL, for example, bromoform, which has a density of 2.89 g/mL. They have limited water solubilities, and are usually found as the free-phase immiscible with water or as residuals trapped by soil. Most DNAPLs are volatile or semivolatile Pankow82 has listed information on their physical and chemical properties, such as molecular weight, density, boiling points, solubility in water, vapor pressure, sediment/water partition coefficient, viscosity, Henry s law constant, and so on (see Tables 18.8 and 18.9). [Pg.745]

Lines 21 -40. Physical data. The usual crystalline shape, density (note two values reported.), sublimation notation, boiling point data, and so on. K at 25° is the ionization constant of the acid the pH of the saturated solution (2.8 at 25°C) is given. The solubility data (Soly) is very complete, including water solutions at various temperatures, a bit about the phase diagram of the compound, and solubility in other solvents. Note that numerical data is given where possible. [Pg.33]

Melting point, boiling point, solubility etc. Most geometrical isomers show characteristic differences in melting point and solubility in various media and from a number of observations, the following generalizations have been arrived at ... [Pg.108]

The diastereoisomers have different physical properties. They have different melting and boiling points, solubilities, densities, refractive indices or adsorption coefficients. They can be easily separated, most often by fractional crystallization and adsorption. The enantiomers are not separated by these techniques. [Pg.125]

Activity data for electrolytes usually are obtained by one or more of three independent experimental methods measurement of the potentials of electrochemical cells, measurement of the solubility, and measurement of the properties of the solvent, such as vapor pressure, freezing point depression, boiling point elevation, and osmotic pressure. All these solvent properties may be subsumed under the rubric colligative properties. [Pg.449]

Boiling Points, Melting Points, Solubility, and Stability. 4.2 Chromatographic Behavior. 4.3 Aromaticity. 4.4 Tautomerism... [Pg.273]

Boiling Points, Melting Points, Solubility, and Stability... [Pg.278]

The standard processes of fractionation used in this work are distillation, extraction, adsorption, and crystallization, which involve the properties of vapor pressure (or boiling point), solubility, adsorbability, and freezing point (and cryoscopic constant). These processes of fractionation may be used in several variations ... [Pg.340]

Measurements are made of the simple physical properties of the freezing point (this property will usually already have been measured in the determination of purity), boiling point, density, and refractive index. The foregoing properties are necessary. The following properties may also be determined if equipment is available viscosity, solubility in a proper solvent, and critical solution temperature in a proper solvent. [Pg.342]


See other pages where Solubility boiling point and is mentioned: [Pg.196]    [Pg.867]    [Pg.463]    [Pg.73]    [Pg.464]    [Pg.116]    [Pg.724]    [Pg.196]    [Pg.867]    [Pg.463]    [Pg.73]    [Pg.464]    [Pg.116]    [Pg.724]    [Pg.1668]    [Pg.84]    [Pg.399]    [Pg.206]    [Pg.144]    [Pg.1619]    [Pg.22]    [Pg.430]    [Pg.122]    [Pg.217]    [Pg.128]    [Pg.44]    [Pg.7]   
See also in sourсe #XX -- [ Pg.394 ]

See also in sourсe #XX -- [ Pg.394 ]

See also in sourсe #XX -- [ Pg.396 ]




SEARCH



And boiling points

© 2024 chempedia.info