The Elements of Electro-chemistryMacmillan and Company, Limited, 1896 - 284 strani |
Druge izdaje - Prikaži vse
Pogosti izrazi in povedi
alkali amount anion atoms cadmium calculated cathions centration charged Chem chemical chlorine ions circuit compounds concentration cell conductors considered corresponding coulombs current-strength Daniell element decomposition point degree of dissociation determined dilute solution dissolved substance electric current electrical energy electrode electrolyte electrolytic solution pressure electromotive force equivalent conductivity evidently exists formula gases gram gram-equivalent gram-molecule heat hydrogen and oxygen hydrogen ions increased latter liquid maximum measured mercurous chloride mercury metal molecular molecules motive force negative ions obtained OH ions ohms osmotic pressure p₁ passes physik platinised platinum polarisation pole positive electricity positive ions potassium chloride potential difference precipitated produced quantity of electricity rates of migration represented resistance salt separated Siemens units silver nitrate sodium soluble sulphate solution surface takes place temperature tion tube undissociated valency velocities of migration vessel volt wire Zeitschr zinc chloride zinc ions zinc sulphate απ ᎡᎢ
Priljubljeni odlomki
Stran 177 - ... They differed from each other far more than could be accounted for by errors of experiment ; thus, the values found for T by this formula were too high, and frequently exceeded 100 per cent. For any given surface the values were found to increase progressively with the value of x used in the tests. The reason for this is easily seen when it is remembered that equations (8) to (13) are only true on the assumption that the surfaces considered are purely diffusive, and do not alter in appearance...
Stran 259 - Na+ and Cl~ ions on one side is the same as the product of the concentrations of the same ions on the other side of the membrane, that is...
Stran 9 - Ike current is directly proportional to the electromotive force and inversely proportional to the resistance.
Stran 62 - Two wires, one connected with the positive, and the other with the negative pole of a battery, Q, are extended along the top of the trough, and supported on rods of dry wood, B and D.
Stran 173 - Expressed in words, the law states that the product of the concentrations of the ions divided by the concentration of the undissociated molecules is a constant quantity ie, (conen.
Stran 156 - ... pressure of the zinc in the amalgam and m is unity because zinc is monatomic in mercury. This solution pressure is not the one introduced by Nernst because that was a constant. As a matter of fact, LeBlanc gets out of the difficulty only by saying that, since the osmotic pressures of zinc in mercury are proportional to the concentrations, the electrolytic solution pressures of the amalgams may be assumed to be proportional to the osmotic pressures of the dissolved zinc. In a cell with two amalgam...
Stran 255 - ... that the electrical energy obtainable through the formation of water from oxygen and hydrogen, or necessary for its decomposition (the two being equal and of opposite sign), may assume any magnitude from zero to a certain value dependent on the pressures of the gases or their concentrations.
Stran 58 - ... whose ions are firmly combined with one another, as inactive. I have also maintained it as probable, that in extreme dilution all the inactive molecules of an electrolyte are transformed into active. This assumption I will make the basis of the calculations now to be carried out. I have designated the relation between the number of active molecules and the sum of the active and inactive molecules, as the activity coefficient. The activity coefficient of an electrolyte at infinite dilution is...
Stran 47 - Basing his conclusions upon the experimental results already obtained, he declared "every assumption to be inadmissible which requires the natural condition of a solution of an electrolyte to be one of equilibrium, in which every positive ion is firmly combined with its negative ion, and which at the same time requires the action of a definite force in order to change this condition of equilibrium into another differing from it only in that some of the positive ions have combined with other negative...
Stran 68 - In the fourth chapter the work of Hittorf in determining the relative rates of migration of the different ions from the changes taking place in the concentration of the solution near the electrodes is carefully outlined. The next chapter contains a full account of the researches of Kohlrausch and others on the conductivity of dilute solutions. The sixth chapter, on electro-motive force, clearly presents the methods now employed in determining the electro-motive force as depending on osmotic pressure...