对铁的腐蚀实验进行了改进与探讨,在实验中设计两组对比实验,直观、深度地认识和理解铁的吸氧腐蚀和析氢腐蚀。结果表明:通过对比实验,借助U形管中水位变化,有助于学生了解Fe~(2+)促进铁的吸氧腐蚀,有助于学生理解吸氧腐蚀与析氢腐蚀的异同。 Iron corrosion experiments were improved and discussed. Two sets of comparative experiments were designed in the experiment to intuitively and deeply understand and understand the oxygen absorption corrosion and hydrogen evolution corrosion of iron. The results show that through the comparative experiments, the change of water level in the U-shaped tube can help students understand that Fe 2+ promotes the oxygen absorption and corrosion of iron and help students to understand the similarities and differences between oxygen absorption and hydrogen evolution.