Colloid Symposium MonographJoseph Howard Mathews, Harry Nicholls Holmes, Harry Boyer Weiser Williams & Wilkins Company, 1925 |
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10-5 equivalents acid and alkali acid bound acid or alkali adsorbed adsorption albumin alcohol soluble protein alkali bound amino acids Ammonia amount of acid arginine benzene binding calculated capillary carbon casein cent alcohol cent Per cent centrifugal Chem chemical chloric acid chloride clay colloidal combination curve cystine determined dispersion double refraction Durumin E.M.F. pH CH effect electrolytes emulsifying emulsion equilibrium equivalents of acid fibrin gelatin gliadin histidine Hordein Humin hydrochloric acid hydrogen ion hydrogen ion concentration hydroxyl ion concentration increase insoluble interface ionization isoelectric point Kafirin layer liquid lysine MALITIES method moisture molecules nitrogen nitrogen distribution non-amino normal obtained Osborne particles phase phosphoric acid polar POTENTIOMETRIC TITRATION precipitated prolamines protein salts Sativin Secalin SLYKE ANALYSIS sodium hydroxide soil solution sorghum Sorghumin Speltin substances sulfuric acid surface energy TABLE temperature teosinte Teozein TITRATION TOTAL NITROGEN Triticum tube values VARYING viscosity wheat zein
Popular passages
Page 144 - ... packed states of matter, must differ from the interior mass in the orientation of the axes of the fields with respect to the normal to the surface, and so form a skin on the surface of a pure substance having all the molecules oriented in the same way instead of purely in random ways.
Page 170 - ... orientation of the least active portion of the molecule toward the vapor phase, AND AT ANY SURFACE OR INTERFACE THE CHANGE WHICH OCCURS is SUCH AS TO MAKE THE TRANSITION TO THE ADJACENT PHASE LESS ABRUPT. This last Statement expresses a general law, of which the adsorption law is only a. special case. If the molecules are monatomic and symmetrical, then the orientation will consist in a displacement of the electromagnetic fields of the atom. This molecular orientation sets up what is commonly...
Page 156 - Raoult's law, at least if the data at present accepted in this connection are as exact as they are supposed to be. The new principle or law will first be stated in one of its special forms as follows: Whenever a molecule moves from the interior of a liquid into the surface in such a way as to form a new surface, the average amount of its kinetic energy which is converted into potential energy is equal to 144% of the mean translational kinetic energy of a gas molecule at the same temperature. This...
Page 170 - The general law for surfaces seems to be as follows : // we suppose the structure of the surface of a liquid to be at first the same as that of the interior of the liquid, then the actual surface is always formed by the orientation of the least active portion of the molecule toward the vapor phase, AND AT ANY SURFACE OR INTERFACE THE CHANGE WHICH OCCURS IS SUCH AS TO MAKE THE TRANSITION TO THE ADJACENT PHASE LESS ABRUPT.
Page 170 - NCS, COR, CHO, I, OH, or groups which contain N, S, O, I, or double bonds, turn toward the interior of the liquid. If any of these organic compounds are dissolved in water, their orientation in the water surface is the same as that just given, with the active groups inward.
Page 53 - Positive double refraction is observed when the index of refraction of the extraordinary ray is greater than that of the ordinary ray, while negative double refraction is the reverse.
Page 163 - ... of organic liquids are miscible unless the members of the pair lie at the very opposite extreme of the list of organic substances; water dissolves salts or organic substances which are close to it in the list. An interesting illustration of this relation is given by data on the organic halogen derivatives listed above. The solubility of carbon tetrachloride per 100 grams of water is 0.80 grams, while that of chloroform, which lies closer to water, is 0.822 grams; and methylene chloride, approaching...
Page 143 - The corpuscular theory of matter traces all material forces to the attraction or repulsion of foci of strain of two opposite types. All systems of these foci which have been considered would possess an unsymmetrical stray field — equipotential surfaces would not be disposed about the system in concentric shells.
Page 144 - ... that C corresponds to K which in the gas equation is the gas constant R. But, whereas R implicitly refers to a zero of temperature, namely, the absolute zero, the constant c is related to the temperature of complete miscibility of A and B when Ts is zero. If the fields of force about a molecule are not symmetrical, that is to say, if the equipotential surfaces do not form spheres about the centre of mass, the arrangement of the molecules of a pure fluid must be different at the surface from the...
Page 159 - The same relation seems to hold for the free surface energy (y) provided the temi>erature range is not too great. Thus the free surface energy of ethyl ether at a corresponding temperature of 0.7 is 4.0 as calculated from the value of carbon tetrachloride, and 3.9, as calculated from the value for chlorobenzene, while the experimental value is 4.0. This statement as applied to the latent heat of vaporization alone, is somewhat similar to Trouton's law, which is known to be not entirely exact. Since...