scholarly journals THE REFRACTIVE POWER OF THE HALOGEN SALTS OF LITHIUM, SODIUM AND POTASSIUM IN AQUEOUS SOLUTION.

1911 ◽  
Vol 33 (6) ◽  
pp. 901-922 ◽  
Author(s):  
Gregory P. Baxter ◽  
Arthur C. Boylston ◽  
Edward Mueller ◽  
N. Henry Black ◽  
Philip B. Goode
Keyword(s):  
Aqueous Solution ◽  
Refractive Power ◽  
Sodium And Potassium ◽  
Halogen Salts

Evaluation of changing the structure of aqueous solutions in the near-wall layers with using dielectrometry and resonance method

2015 ◽  
Vol 9 (2) ◽  
pp. 0-0
Author(s):  
Саркисов ◽  
Yu. Sarkisov ◽  
Сидоренко ◽  
G. Sidorenko ◽  
Лаптев ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Fluid Layer ◽  
Chloride Concentration ◽  
Resonance Method ◽  
Solution Concentration ◽  
Wall Layer ◽  
Oscillatory Circuit ◽  
Structure Of Aqueous Solutions ◽  
Sodium And Potassium

In this work the authors evaluated changes of the structure of aqueous solutions of chlorides of sodium and potassium in various concentrations in the parietal layer by means of the dielectrometry and resonance method. In experiments at 20 ° C, the concentration of sodium and potassium chloride concentration of 0.01 M to 1 M in thenear-wall layer "glass - water solutions" height of less than 1000 microns observed multiple reduction of capacitance of solutions, and Q of an oscillatory circuit and a multiple increase coefficient KS which allows to evaluate the structure of the solutions. It is shown that the structure of the solutions in the wall layer depends on the solution concentration, the nature of the solute and the material of surface. Methods of dielectrometry and resonance are informative in the interpretation of the processes in the fluid layer at the interface, "solid – aqueous solution".

scholarly journals Alexdrandrite Effects and Pseudosymmetry in Aluminum Oxalates

2014 ◽  
Vol 70 (a1) ◽  
pp. C1017-C1017
Author(s):  
Ruthairat Nimthong ◽  
Matthias Zeller ◽  
Patimaporn Sungnoi ◽  
Sumpun Wongnawa ◽  
Chaveng Pakawatchai
Keyword(s):  
Aqueous Solution ◽  
Solid State ◽  
Color Change ◽  
Analysis Data ◽  
Tetragonal Symmetry ◽  
Potassium Ions ◽  
Solution Properties ◽  
Cubic Symmetry ◽  
Change Effect ◽  
Sodium And Potassium

Three chromium doped potassium aluminum oxalates, (K3[Al0.95Cr0.05(C2O4)3]·3H2O) "Blue", (K2/3Na7/3[Al0.95Cr0.05(C2O4)3]·4H2O) "RedCubic", and (K18{Na[Al0.964Cr0.036(C2O4)3]6}Cl·18H2O) "Red-Hexagonal" were prepared from aqueous solutions of K3[Cr(C2O4)3]·3H2O, K3[Al(C2O4)3]·3H2O and NaCl, and their solid state and solution properties were rationalized from their crystal structures, analysis data and solid state and solution UV-vis spectra. Crystals of "RedCubic" are characterized by a metrically cubic I-centered unit cell, but do have actual tetragonal symmetry derived by ordering of sodium and potassium ions not compatible with the apparent cubic symmetry. Results of 13C-NMR, EPMA/EDX, SC-XRD, and UV-Vis spectroscopies are discussed in relation to the compound's structures and color behavior. In aqueous solution RedCubic and Blue show the same greenish purple color and identical electronic absorption peaks. In the solid state, they have different colors and show slightly different absorption peaks. Their color behavior as well as the Alexandrite color-change effect observed in the two Red crystals are rationalized based on the compounds' absorption peaks.

Chemistry of Alkali Metals 1. A Simple Synthesis of Liquid K-Na Alloy and Few Examples of its Use in the Chemistry Education Lab

2018 ◽  
Vol 18 (2) ◽  
pp. 114
Author(s):  
Marina Stojanovska ◽  
Vladimir M. Petrusevski
Keyword(s):  
Aqueous Solution ◽  
Ammonium Chloride ◽  
Chemistry Education ◽  
Alkali Metals ◽  
Liquid Product ◽  
Elemental Mercury ◽  
Simple Synthesis ◽  
Saturated Aqueous Solution ◽  
Sodium And Potassium ◽  
Take All

<span>Upon pressing small pieces of sodium and potassium with a glass rod, the solid pieces turn into silvery liquid product — a K–Na alloy. The alloy reacts with water very vigorously (often an explosion occurs). This experiment is reserved only for chemistry instructors, providing they take all necessary precautions. Two much safer experiments are described: a novel one, where the alloy is allowed to react with mercury, giving K–Na amalgam, and the reaction of the obtained amalgam with saturated aqueous solution of ammonium chloride, where unstable ammonium amalgam is formed. Ammonium amalgam decays in several minutes to give ammonia, hydrogen and elemental mercury.</span>

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