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Decomposition of Hydrogen peroxide (H2O2)
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In this video we'll look at the equation for the decomposition of H2O2 (Hydrogen peroxide). When Hydrogen peroxide decomposes the products are Oxygen gas and Water. We can write the balanced equation as:
2H2O2 = O2 + 2H2O
H2O2 could be a liquid, or dissolved in water (aqueous). The O2 will be a gas, those are the bubbles we see forming when we use Hydrogen peroxide. Water will be a liquid or gas, depending on how concentrated the H2O2 is. The more concentrated, the more exothermic and the more likely the water will be a gas.
The reaction takes place much, much faster in the presence of a catalyst. Common catalysts are MnO2 or KI. The enzyme Catalase will also speed up the reaction (enzyme are biological catalysts).
In the video we see the H2O2 decomposed by KI (the elephant toothpaste) and by Catalse (the carrot).
Elephant Toothpaste Video:
2H2O2 = O2 + 2H2O
H2O2 could be a liquid, or dissolved in water (aqueous). The O2 will be a gas, those are the bubbles we see forming when we use Hydrogen peroxide. Water will be a liquid or gas, depending on how concentrated the H2O2 is. The more concentrated, the more exothermic and the more likely the water will be a gas.
The reaction takes place much, much faster in the presence of a catalyst. Common catalysts are MnO2 or KI. The enzyme Catalase will also speed up the reaction (enzyme are biological catalysts).
In the video we see the H2O2 decomposed by KI (the elephant toothpaste) and by Catalse (the carrot).
Elephant Toothpaste Video:
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