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5ocm³ of hydrogen peroxide, which has a concentration of 2.0mol/dm³ is decomposed H₂O₂=2H₂O+O₂ How many moles of hydrogen peroxide are there in 50 cm³ of solution containing 2.0mol 2.how many moles of oxygen are formed when 50cm³of hydrogen peroxide is decomposed
Accepted Answer
Here's the breakdown of the chemistry involved:
1. Moles of Hydrogen Peroxide:
Convert cm³ to dm³: 50 cm³ = 0.05 dm³
Calculate moles: moles = concentration × volume
moles H₂O₂ = (2.0 mol/dm³) × (0.05 dm³) = 0.1 moles
2. Moles of Oxygen Produced:
Stoichiometry: The balanced equation shows 1 mole of H₂O₂ decomposes to produce 1 mole of O₂.
Calculate moles of O₂: Since the mole ratio is 1:1, 0.1 moles of H₂O₂ will produce 0.1 moles of O₂.
Therefore, there are 0.1 moles of hydrogen peroxide in the solution, and decomposing it will produce 0.1 moles of oxygen.
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