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Catalytic Decomposition of Hydrogen Peroxide
Reactants
- Solution A: 50ml 30% H2O2
- Solution B: 4 drops Ivory dish soap
- Solution C: 1gm KI
Procedure
- On a large sheet of plastic backed absorbent paper, place a 1 liter graduated cylinder in a large petri dish.
- To the graduated cylinder cylinder add 50ml 30% H2O2 and 4 drops Ivory dish soap.
- When ready, add 1gm KI. Oxygen released by the rapidly catalyzed decomposition generates a tremendous amount of foam.
Caution. This reaction generates a lot of heat. Glassware may burn your hand.
Reactions
H2O2 (aq) + I- (aq) --> H2O (l) + OI- (aq)The catalytic decomposition of hydrogen peroxide occurs when administered to wounds. Catalase, an enzyme in the blood, catalyzes the reaction. Entertain your friends. Next time you cut yourself, mix soap and 3% peroxide before pouring it on the cut.H2O2 (aq) + OI- (aq) --> H2O (l) + O2(g) + I- (aq)
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2H2O2 (aq) --> 2H2O (l) + 1/2 O2 (g)
