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固体加热型

2KMnO 4 K 2 MnO 4 + MnO 2 + O 2. 制氧气. 固体加热型. 1. CaCO 3 + 2HCl CaCl 2 + H 2 O + CO 2. 2. 2H 2 O 2 2H 2 O + O 2. MnO 2. 固－液不加热型. “ 难” 或“不易” 溶于水且不与水反应. 比空气重. 比空气轻. “ 难” 或“不易” 溶于水且不与水反应. 变形二. 变形三. 食用油. 水. 水. 测量排出气体的体积. 变形四.

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固体加热型

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  1. 2KMnO4 K2MnO4 + MnO2 + O2 制氧气 固体加热型

  2. 1. CaCO3 + 2HCl CaCl2 + H2O + CO2 2. 2H2O2 2H2O + O2 MnO2 固－液不加热型

  3. “难” 或“不易” 溶于水且不与水反应 比空气重 比空气轻

  4. “难” 或“不易” 溶于水且不与水反应 变形二 变形三 食用油 水 水 测量排出气体的体积 变形四

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