【摘 要】
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人教版《化学》九年级下册有一 CO 还原 Fe_2O_3实验,其所用仪器颇多,操作繁琐。笔者对该实验进行了改进,改进后的实验效果很好。现将改进后的实验步骤分述如下。1.用排水法
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人教版《化学》九年级下册有一 CO 还原 Fe_2O_3实验,其所用仪器颇多,操作繁琐。笔者对该实验进行了改进,改进后的实验效果很好。现将改进后的实验步骤分述如下。1.用排水法收集一集气瓶 CO,用玻璃片盖好备用。预先给集气瓶配好一个胶塞,胶塞上
There is a CO reduction Fe_2O_3 experiment in the 9th grade of the Chemistry Edition of the People’s Education Press. The instruments used are quite numerous and the operation is cumbersome. The author has improved the experiment, and the improved experiment works well. The improved experimental steps are now described as follows. 1. Collect a set of gas cylinders CO by the drainage method and cover them with glass sheets. Prearrange the gas bottle with a rubber plug, rubber plug
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