Hydrogen Peroxide, Catalytic Decomposition, 1 of 2

Hydrogen Peroxide, Catalytic Decomposition, 1 of 2

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Caption: Catalytic decomposition of hydrogen peroxide, 1 of 2. A 30% hydrogen peroxide solution (H2O2) undergoes a very slow decomposition into water (H2O) and oxygen gas (O2) under normal conditions. The rate of decomposition is greatly increased by addition of powdered solid potassium iodide (KI) which acts as a catalyst. The decomposition of hydrogen peroxide occurs in two steps: H2O2 (aq) + I- (aq) -> H2O(l) + OI-(aq) and H2O2(aq) + OI-(aq) -> H2O(l) + O2(g) + I-(aq).

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Keywords: bubbles, catalyst, catalytic, chemical, chemistry, decomposition, flask, foam, gas, h2o2, hydrogen peroxide, iodide, ki, o2, oxygen, peroxide, potassium, reaction, science, solution, volumetric flask

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