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有些化学试剂浓度偏高 ,是导致实验效果不明显的因素之一。针对这一问题进行多次探索调试 ,终于找到适宜浓度 ,取得了较明显的实验效果。这样既能减少化学试剂的浪费 ,节省了资金 ,又能保证明显的实验效果。其实验方法如下 :1 2 KI+Br2 =2 KBr+I2 的实验现象。此实验证明Br2
Some chemical reagent concentration is high, is one of the factors that lead to the obvious effect of the experiment. In response to this issue many times to explore and debug, and finally find the appropriate concentration, and achieved more obvious experimental results. This will not only reduce the waste of chemical reagents, save money, but also to ensure that the obvious experimental results. The experimental method is as follows: 1 2 KI + Br2 = 2 KBr + I2 experimental phenomenon. This experiment proved Br2