What is the role of manganese dioxide in the decomposition of hydrogen peroxide?
the manganese dioxide acts like heat nd changes the substance
When the Maganese Dioxide (black powder) was added to the Hydrogen Peroxide (clear), it bubbled. It creates Water and Oxygen gas. The reaction is Decomposition. Hydrogen Peroxide --> Water + Oxygen 2H₂O₂ --> 2H₂O + O₂ When you write the reaction, make sure you put manganese dioxide over the yield symbol because it is a catalyst. Manganese dioxide catalyzes the decomposition of hydrogen peroxide, to Water and oxygen: 2 H2O2 ---MnO2---> 2 H2O + O2
Manganese dioxide will catalyze the release of oxygen when added to hydrogen peroxide. The peroxide, H2O2, becomes H2O + O. The oxygen escapes as a gas, leaving water. The manganese dioxide remains unchanged. Concentrated hydrogen peroxide reacts very rapidly, even violently, when MnO2 is added; but a dilute solution will release its oxygen more slowly and steadily; making it useful as an oxygen generator for laboratory experiments.