Potassium chloride dioxide solubility

Engel A process for making potassium carbonate from potassium chloride obtained from the salt deposits at Stassfurt, Germany. The basis of the process is the formation of the sparingly soluble double salt MgKH(C03)2-4H20 when carbon dioxide is passed into a suspension of magnesium carbonate in aqueous potassium chloride ... 

The soluble alkali tantalates undergo ready hydrolysis when their aqueous solutions are boiled, precipitation of a more add salt takes place and some alkali base passes into solution. Separation of the base in this manner is naturally favoured by the presence of acids, and even so weak an acid as carbon dioxide or hydrogen sulphide pretipitates tantalic add or an acid salt with the stronger adds (sulphurous acid, sulphuric add, hydrochloric acid, nitric add, etc., but not with hydrofluoric add) predpitation of tantalic add takes place readily, but excess of the strong mineral add redissolves the predpitate. Potassium chloride... 

The second reaction is accelerated by catalyzers, such as manganese dioxide or ferric oxide, or in fact any material with a rough surface. Too high a temperature also causes reaction (2) principally to take place. On the other hand, if the temperature is maintained at the right point, the salt is free from dirt, and the inside of the crucible is perfectly clean and free from roughness, the decomposition proceeds mainly according to reaction (1). Potassium perchlorate is very sparingly soluble in cold water and may be separated from potassium chloride and any undecomposed potassium chlorate by crystallization. 

The solubility data of carbon dioxide in aqueous solutions of binary mixed salts obtained in this study are summarized in Table I those for ternary mixed salts are summarized in Tables II, III, and IV. Figures 1 and 2 show the solubility data for the potassium chloride-calcium chloride and sodium chloride-sodium sulfate-ammonium chloride mixed solutions, respectively, which are representative of all the data. The salting-out effect was shown in all the systems studied. 

Table III. Experimental Results of Carbon Dioxide Solubility in Aqueous Solutions of Potassium Chloride (1)—Sodium Chloride (2)—Calcium Chloride (3) Mixed Salt at 25°C and 1 atm...

Figure 1. Solubility of carbon dioxide in aqueous potassium chloride (l)-calcium chloride (2) mixed solutions at 25 °C and...

Figure 3 shows the plot for potassium chloride-calcium chloride binary salt system. Figure 4 shows the plot for sodium chloride-sodium sulfate-ammonium chloride ternary salt system. As shown in these figures, the plots of log(L0/L) vs. salt concentration all curve upward convexly, and the effects of these mixed salts on the solubility of carbon dioxide in the aqueous solutions do not show a direct correlation by the Setschenow Equation. These features are the same in all the mixed-salt systems considered here. 

Soluble, effervescent tablets are prepared by compression. In addition to active ingredients, they contain mixtures of acids (citric acid, tartaric acid) and sodium bicarbonate (NaHCOs) that release carbon dioxide when dissolved in water. The United States Pharmacopeia (USP) 24 includes the following seven monographs Acetaminophen for Effervescent Oral Solution Aspirin Effervescent Tablets for Oral Solution Potassium Bicarbonate Effervescent Tablets for Oral Solution Potassium Bicarbonate and Potassium Chloride for Effervescent Oral Solution Potassium Bicarbonate and Potassium Chloride Effervescent Tablets for Oral Solution Potassium and Sodium Bicarbonates and Citric Acid for Oral Solution and Potassium Chloride, Potassium Bicarbonate, and Potassium Citrate Effervescent Tablets for Oral Solution. ... 

Ethanol mercuric chloride, CH2OH.CH. HgCi. —Ethylene is passed into a nearly saturated solution of mercuric chloride, and a double salt of the ethanol compound with mercuric chloride is obtained. This is washed free from other compounds and recrystaiiised from spirit. It forms plates, soluble in potassium hydroxide, from which solution carbon dioxide precipitates ethanol mercuric chloride. The chloride is also formed by the action of ethylene on saturated mercuric acetate, treating the solution, with potassium chloride, then precipitating the compound Ijy carbon dioxide. It melts at 155 C. 

Measuring the pH with a pH meter is only possible if the conductivity is increased by the addition of a little potassium chloride. Distilled water has a low pH, which quite often is caused by dissolved carbon dioxide. This is removed during the distillation process but it can re-enter by diffusion. This is a strong acid with a limited solubility. It is partly the cause of distilled water s aggressiveness towards base metals (beware with aluminium). Dissolved gases may also be found in demineralised water since the process is not designed to remove them, neither is the demineralisation process designed to remove heavy metals, so also these can be found. 

Liquid sulphur dioxide, says P. Walden,33 readily dissolves sodium and potassium bromides, and C. J. J. Pox has shown that at 25° the solubility S of sulphur dioxide in soln. of sodium bromide, unlike sodium chloride, is greater than it is in water, viz. 32 76. Thus for soln. of these salts of normality N, the solubility of sulphur dioxide is ... 

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