Sodium Sulfide Nonahydrate Solubility

Sodium sulfide nonahydrate is a compound with the chemical formula Na2S·9H2O. Its solubility in water varies depending on the temperature, as well as the concentration of other ions present in the solution. At room temperature (25°C), the solubility of sodium sulfide nonahydrate in water is approximately 20 grams per 100 milliliters of water.

However, as the temperature increases, the solubility of sodium sulfide nonahydrate also increases. For example, at 50°C, its solubility in water is approximately 33 grams per 100 milliliters, while at 100°C, it can dissolve up to approximately 70 grams per 100 milliliters of water.

It should be noted that the presence of other ions in the solution can also affect the solubility of sodium sulfide nonahydrate. For instance, the presence of certain cations, such as calcium or magnesium, can reduce the solubility of the compound in water, while the presence of certain anions, such as sulfide or hydroxide, can increase its solubility.