Volume of mixing

The volume of mixing for one mole of solution is termed the molar volume of mixing, A mixFm, and is derived by dividing eq. (3.14) by the total number of moles ( A + wb) in the system... 

The molar volume of mixing of two binary systems is shown in Figure 3.2. Pb-Sn shows positive deviation from the ideal behaviour at 1040 K [1] while the volume of mixing of Pb-Sb at 907 K is negative, with a minimum at Xpb 0.5 and asymmetric with respect to the composition [2],... 

The partial molar entropy, enthalpy or volume of mixing can be derived from eq. (3.21) and are given by the relations... 

Or in words in the absence of additional chemical interactions between the two types of atom, the enthalpy and volume of mixing are both zero. 

FIGURE I Retention times of two analytes using various mobile preparations vs. pump blend. Note that procedures A and D are almost equivalent while column B or C (using volumetric flasks) yields retention times which are either too high or too low depending on whether methanol or water is filled first.This phenomenon is caused by the negative volume of mixing. Procedure A is recommended for all mobile phase preparation. 

If, however, site interactions of atoms on energetically equivalent sites are equal and the standard molar volumes of mixing components are not dissimilar (i.e., within 5 to 10% difference), equation 3.157 may be simplified and the activity of any component i in the mixture (a,) may be expressed in a generalized fashion as shown by Helgeson et al. (1978) ... 

This volume is somewhat smaller than the volume of mixed flow reactor (from Example 9.5) but it is still four times as large as the minimum possible (405 liters, from Example 9.4). 

Table 3.10 Slightly higher air contents are obtained as the volume of mix approaches that of the mix capacity, particularly for the higher cement content mix ...

Conversion of solubilities from thex-scale to the mol dm-3 scale, c, and vice versa requires knowledge of the volume change on mixing the components (the excess volume of mixing, VE). If this is ignored, then the approximate relationships ... 

Utah, which has a radioactive waste disposal license and a RCRA permit from the state, accepts large volumes of mixed waste containing low concentrations of radionuclides that resembles uranium or thorium mill tailings. 

Step 1. For pressure loss due to friction, first determine the homogeneous flow liquid ratio X, volume of liquid per volume of mixed fluid flow. 

Coke oven light oil is a by-product of the manufacture of coke for the steel industry. When coal is subjected to high-temperature carbonization, it yields 16 to 25 liters/ton of light oil that contains 3 to 6% by volume of mixed xylenes. 

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