Ammonium metatungstate is an inorganic compound, the chemical formula is (NH4)10[H2W12O42]•4H2O, it is a white crystal, soluble in water and ethanol. The solubility of ammonium metatungstate refers to the maximum amount of ammonium metatungstate that can be dissolved in a unit volume of solvent at a certain temperature. The solubility of ammonium metatungstate is related to temperature, solvent, pressure and other factors.
The Effect of Temperature on the Solubility of Ammonium Metatungstate
At room temperature, the solubility of ammonium metatungstate is low, about 0.1g/100mL. As the temperature increases, the solubility of ammonium metatungstate will also increase. At 100°C, the solubility of ammonium metatungstate can reach 1.5g/100mL. This is because an increase in temperature will increase the thermal mobility of solvent molecules, making it easier for solvent molecules to interact with ammonium metatungstate molecules, thereby increasing solubility.
Effect of Solvent on Solubility of Ammonium Metatungstate
Besides temperature, solvent also affects the solubility of ammonium metatungstate. In water, the solubility of ammonium metatungstate is high, but in ethanol is low. This is because the interaction force between water molecules and ammonium metatungstate molecules is strong, while the interaction force between ethanol molecules and ammonium metatungstate molecules is weak.
The Effect of Pressure on the Solubility of Ammonium Metatungstate
Pressure also affects the solubility of ammonium metatungstate. Under high pressure, the distance between solvent molecules will shorten, thereby increasing the interaction force between solvent molecules and ammonium metatungstate molecules, so that the solubility of ammonium metatungstate increases.
The solubility of ammonium metatungstate is affected by many factors, including temperature, solvent and pressure. Understanding the influence of these factors on the solubility of ammonium metatungstate will help us to better control and utilize the compound of ammonium metatungstate.
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