Big Chemical Encyclopedia

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

Articles Figures Tables About

Classifying Mixtures

G.l Classifying Mixtures G.2 Separation Techniques G.3 Molarity G.4 Dilution... [Pg.76]

The approach to classifying mixtures includes the application of expert judgement in a number of areas in order to ensure existing information can be used for as many mixtures as possible to provide protection for human health and the environment. Expert judgement may also be required in interpreting data for hazard classification of substances, especially where weight of evidence determinations are needed. [Pg.20]

In classifying mixtures in this category, the use of expert judgment that considers surface tension, water solubility, boiling point, volatility is critical and especially when Category 2 substances are mixed with water. [Pg.213]

If a mixture is formed by diluting another classified mixture or a substance with a diluent which has an equivalent or lower aquatic hazard classification than the least toxic original component and which is not expected to affect the aquatic hazards of other components, then the mixture may be classified as equivalent to the original mixture or substance. [Pg.229]

Distinguish between elements and compounds. Distinguish between pure substances and mixtures. Classify mixtures as homogeneous or heterogeneous. Explain the difference between mixtures and compounds. [Pg.39]

Graphs of s vs. number of revolutions are plotted. Also, the use of the usual chi-square test is illustrated for comparing distributions to determine whether a batch is randomly mixed. In addition, a table is given for classifying mixtures according to the relative frequency of occurrence of chi-square values. [Pg.255]

A convenient notation for classifying mixtures employed in liquid-liquid extraction is C/, where C is the number of components and the number of partially miscible pairs. Mixtures 3/1, 3/2, and 3/3 are called Type I, Type II, and Type III by some authors. A typical 3/1 three-component mixture with only one partially miscible pair is furfural-ethylene glycol-water, as shown in Fig. 3.10, where the partially miscible pair is furfural-water. In practice, furfural is used as a solvent to remove the solute, ethylene g yco, from water the furfural-rich phase is called the extract, and the water-rich phase the raffinate. Nomenclature for extraction, leaching, absorption, and adsorption always poses a problem because, unlike distillation, concentrations are expressed in many different ways mole, volume, or mass fractions mass or mole ratios and special solvent-free designations. In this chapter, we will use V to represent the extract phase and L the raffinate phase, and y and x to represent solute concentration in these phases, respectively. The use of V and L does not imply that the extract phase in extraction is conceptually analogous to the vapor phase in distillation indeed the reverse is more correct for many purposes. [Pg.445]

I Contrast mixtures and substances. I Classify mixtures as homogeneous or heterogeneous. [Pg.80]

Classify mixtures as solutions or nonsolutions based on their appearance. (Section 7.1)... [Pg.247]

Classify mixtures as solutions or nonsolutions based on their appearance. [Pg.247]

Before a mixture can be offered for transportation, it must be properly packaged, which may require special crating. It also needs to be properly classified according to its properties. There are a wide variety of UN numbers now used to name mixtures. The physical and health hazards that must be evaluated to properly classify mixtures include ... [Pg.622]

The most successful form of the theory is briefly outlined in the Theory Section. In the Section on Results the theory is used to classify mixture phase diagrams in terms of the intermolecular forces involved, and also to predict vapor-liquid equilibria for several binary and ternary mixtures. [Pg.345]


See other pages where Classifying Mixtures is mentioned: [Pg.76]    [Pg.8]    [Pg.89]    [Pg.89]    [Pg.90]    [Pg.283]    [Pg.20]    [Pg.21]    [Pg.113]    [Pg.228]    [Pg.228]    [Pg.66]    [Pg.126]    [Pg.138]    [Pg.353]    [Pg.73]    [Pg.61]   


SEARCH



Classified

Classifier

Classifying

© 2024 chempedia.info