1. Fast dissolution: After Aluminum Sulfate is put into water, it can interact with water and dissolve relatively quickly. This is because Aluminum Sulfate is an ionic compound that ionizes in water. Aluminum ions and sulfate ions interact with water molecules to form hydrated ions, allowing Aluminum Sulfate to dissolve in water. However, if the temperature of the water is lower and the amount of Aluminum Sulfate is larger, the dissolution rate may be slower.
2. Solubility increases significantly with temperature: At room temperature, the solubility of Aluminum Sulfate is already relatively high, approximately 50%. As the temperature increases further, its solubility increases significantly. For example, at 0°C, the solubility of Aluminum Sulfate is approximately 31.2g/100ml; while at 100°C, its solubility can reach approximately 89g/100ml. This is because as the temperature increases, molecular motion intensifies, and the interaction between water molecules and Aluminum Sulfate molecules strengthens, allowing more Aluminum Sulfate molecules to be dissolved in water.
3. Hydrolysis reaction affects solubility: Aluminum Sulfate will undergo a hydrolysis reaction when dissolved in water. Aluminum ions will combine with hydroxide ions in the water, increasing the concentration of hydrogen ions in the water, causing the aqueous solution to be acidic, with a pH value below 2.5. The occurrence of hydrolysis reaction will affect the dissolution balance of Aluminum Sulfate to a certain extent. As the hydrolysis reaction proceeds, the ion concentration in the solution changes, which may affect the further dissolution of Aluminum Sulfate. However, within a certain concentration range, the hydrolysis reaction will not significantly hinder the dissolution of Aluminum Sulfate, but will help it form a stable solution system in water.
4. Good dissolution stability: After Aluminum Sulfate is dissolved in water, the solution formed has good stability. Under normal storage conditions, Aluminum Sulfate in solution will not easily precipitate or decompose. However, if the concentration of the solution is too high or is affected by external factors, such as temperature changes, the addition of other chemicals, etc., the dissolution state of Aluminum Sulfate may change. For example, adding substances such as carbonates or sulfides will completely hydrolyze Aluminum Sulfate, thus affecting its solubility in water.
