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The following chart shows the solubility of various ionic compounds in water at 1 atm pressure and room temperature (approx. 25 °C, 298.15 K). "Soluble" means the ionic compound doesn't precipitate, while "slightly soluble" and "insoluble" mean that a solid will precipitate; "slightly soluble" compounds like calcium sulfate may require heat to precipitate.
Substance Formula 0 °C 10 °C 20 °C 30 °C 40 °C 50 °C 60 °C 70 °C 80 °C 90 °C 100 °C Barium acetate: Ba(C 2 H 3 O 2) 2: 58.8: 62: 72: 75: 78.5: 77: 75
2 KOH + CO 2 → K 2 CO 3 + H 2 O. From the solution crystallizes the sesquihydrate K 2 CO 3 ·1.5H 2 O ("potash hydrate"). Heating this solid above 200 °C (392 °F) gives the anhydrous salt. In an alternative method, potassium chloride is treated with carbon dioxide in the presence of an organic amine to give potassium bicarbonate, which is ...
potassium hydroxide (KOH) Carbonate of potash, salts of tartar, or pearl ash: potassium carbonate (K 2 CO 3) Chlorate of potash: potassium chlorate (KClO 3) Muriate of potash (MOP) potassium chloride (KCl:NaCl = 95:5 or higher) [1] Nitrate of potash or saltpeter: potassium nitrate (KNO 3) Sulfate of potash (SOP) potassium sulfate (K 2 SO 4 ...
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
KOH is a strong base. Illustrating its hydrophilic character, as much as 1.21 kg of KOH can dissolve in a single liter of water. [26] [27] Anhydrous KOH is rarely encountered. KOH reacts readily with carbon dioxide (CO 2) to produce potassium carbonate (K 2 CO 3), and in principle could be used
About 112 g of KOH dissolve in 100 mL water at room temperature, which contrasts with 100 g/100 mL for NaOH. [14] Thus on a molar basis, KOH is slightly more soluble than NaOH. Lower molecular-weight alcohols such as methanol, ethanol, and propanols are also excellent solvents. They participate in an acid-base equilibrium.
Potassium chloride is inexpensively available and is rarely prepared intentionally in the laboratory. It can be generated by treating potassium hydroxide (or other potassium bases) with hydrochloric acid: KOH + HCl → KCl + H 2 O. This conversion is an acid-base neutralization reaction. The resulting salt can then be purified by recrystallization.