Answer:
6.25 moles
Step-by-step explanation:
Given data:
Mass of H₂ = 50 g
Mass of O₂ = 100 g
Moles of H₂O = ?
Chemical equation:
O₂ + 2H₂ → 2 H₂O
Number of moles of H₂:
Number of moles of H₂= Mass /molar mass
Number of moles of H₂= 50 g / 2/mol
Number of moles of H₂= 25 mol
Number of moles of O₂ :
Number of moles of O₂ = Mass /molar mass
Number of moles of O₂ = 100g / 32 g/mol
Number of moles of O₂ = 3.125 mol
Now we will compare the moles of water with hydrogen and oxygen .
O₂ : H₂ O
1 : 2
3.125 : 2 × 3.125 =6.25
H₂ : H₂O
2 : 2
25 : 25
The number of moles of H₂O produced by oxygen are less it will be limiting reactant.