Hydrogen peroxide decomposes into oxygen and water.What mass of oxygen is formed from the decomposition of 125 g of hydrogen peroxide (H₂O₂)?

Question

Quizplus · Accepted Answer

The decomposition of hydrogen peroxide (H2O2) into water (H2O) and oxygen (O2) can be represented by the balanced chemical equation: 2H2O2 → 2H2O + O2. The molar mass of H2O2 is approximately 34 g/mol, and the molar mass of O2 is approximately 32 g/mol. From 68 g of H2O2 (2 moles), 32 g of O2 (1 mole) is produced. Therefore, from 125 g of H2O2, the mass of oxygen produced can be calculated as follows: (125 g H2O2) / (34 g/mol) * (32 g/mol) ≈ 58.8 g.

Hydrogen Peroxide Decomposes into Oxygen and Water