由于碘单质在水中溶解性较差 ,常将它溶解在无色的KI溶液中 ,形成红棕色的I2 KI溶液。在实验过程中使用它时 ,常常伴随非常明显的颜色变化 ,下面就是有关I2 KI溶液颜色变化的三则实验 ,它们都与化学平衡移动相关。一、碘溶液与酸、碱溶液的可逆反应在试管中加入 5mL水 ,再加 Due to the poor solubility of iodine in water, it is often dissolved in a colorless KI solution to form a red-brown I2 KI solution. When used in experiments, it is often accompanied by very noticeable color changes. Here are three experiments on the color change of I2 KI solutions, all of which are related to chemical equilibrium shifts. First, the iodine solution and acid, alkali solution reversible reaction in the test tube by adding 5mL of water, plus