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Production of Oxygen by Hydrogen Peroxide One student mixed 50 g hydrogen peroxide solution with 1 g manganese dioxide to produce oxygen. After complete reaction, the remaining mixed mass was weighed to be 49.4 G 1. Quality of oxygen produced by reaction 2. What is the mass fraction of hydrogen peroxide in the hydrogen peroxide solution used by the student? Manganese dioxide is only used here as a catalyst. Why should it be added? Can you explain the process and the analysis?
1. The reduced mass is the mass of oxygen, i.e.50+1-49.4=1.6g
2.2H2O2===2H2O+O2
68 32
X 1.6g
X =3.4g
Mass fraction 3.4/(49.4-1)
Benefits of replacing long neck funnel with syringe in hydrogen peroxide oxygen production
Easy to control reaction speed to keep gas flow rate stable
Easy to control reaction rate to keep gas flow rate stable
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