Hydrogen Peroxide (H₂O₂)decomposes Catalytically in the Presence of Metal Ions $\to$

question 84

Multiple Choice

Hydrogen peroxide (H₂O₂) decomposes catalytically in the presence of metal ions and enzymes called peroxidases.If a 250 mL bottle of hydrogen peroxide solution containing 3.0% H₂O₂ (by mass) decomposes completely,how many liters of oxygen gas would it generate? Assume that 1 mol of gas occupies a volume of 22.4 L and that the density of the solution is 1.0 g/mL.The reaction is 2 H₂O₂(aq) $\to$ 2 H₂O( ) + O₂(g)

• A)2.5 L
• B)4.9 L
• C)9.9 L
• D)7.4 L
• E)0.22 L

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