溶解度是物质的重要属性之一,它在理论上和实际应用上均有很大的意义。一般认为,离子化合物的溶解过程,是晶格中的离子首先克服彼此间的引力,从晶格中解离下来成为气态离子,然后进入水中与极性水分子结合成水化离子。如果某物质的离子在水化过程中,放出的能量足以抵偿和超过破坏晶格所需要的能量,则该物质易溶于水,溶解度大;反之,则 Solubility is one of the important properties of matter, which has great significance both in theory and in practice. Generally believed that the dissolution process of ionic compounds, ions in the lattice first overcome each other’s gravitation, dissociated from the lattice as a gaseous ion, and then into the water with polar water molecules into hydrated ions. If a substance’s ions during hydration release energy enough to offset and exceed the energy required to destroy the lattice, then the material is soluble in water, the solubility of large; the other hand, then