基本概念溶解过程大多数的盐都是离子型的,即使在固态时也是这样。然而,虽然固体氯化钠是以Na~+和Cl~-的状态存在,但是要使这些离子离开它们在晶体中品格的位置,仍需要大量的能量。因此,为了熔化氯化钠,就必须加热到801℃。把盐溶解在水里,并不消耗大量的能量,却较容易达到这样的结果。显然,在水分子和盐的离子间必有一定的吸引 Basic Concepts Dissolution Process Most salts are ionic, even in the solid state. However, although solid sodium chloride exists in the states of Na~+ and Cl~~, it takes a great deal of energy to get these ions out of their position in the crystal. Therefore, in order to melt sodium chloride, it must be heated to 801°C. Dissolving salt in water does not consume a lot of energy, but it is easier to achieve this result. Obviously, there must be a certain attraction between the molecules of water and salt.