一、改进的缘由在初中化学实验课中,常用启普发生器制取氢气。在启普发生器里,硫酸和锌粒发生化学反应生成氢气,但普通的启普发生器存在这样一个问题:在硫酸与锌粒的反应过程中,锌粒不断变小,变小的锌粒会掉到启普发生器的底部,这样,即使关闭排气阀,掉到底部的锌粒仍然会和留在底部的硫酸发生反应而继续生成氢气,从而导致启普发生器中 First, the reason for improvement In junior high school chemistry experiment class, commonly used Kipp generator hydrogen production. In the Kipp generator, sulfuric acid and zinc particles chemically react to produce hydrogen gas, but the common Kipp generator has such a problem that during the reaction between sulfuric acid and zinc particles, zinc particles become smaller and smaller zinc particles Will drop to the bottom of the Kipp generator so that the zinc particles that fall to the bottom will react with the sulfuric acid remaining on the bottom and continue to generate hydrogen even if the vent valve is closed,