新型态MnO2在过氧化氢制备氧气中的研究

作者:蒿树君; 伍晓春; 陈华勇; 申政; 李海燕; 邓永
来源:中学化学教学参考, 2018, (18): 54.

摘要

<正>一、问题提出在演示二氧化锰催化过氧化氢分解制氧气时,由于氧气的产生将会看到不断翻腾的黑色悬浮液。氧气过快产生,使气体收集工作具有一定的难度,让学生认为该反应仅为昙花一现,难以较长时间观察反应现象。同时,在传统演示实验中,为对比反应前后二氧化锰的质量变化,须经过滤分离,其操作繁琐,耗时长。针对以上

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