Answer:
60.6
Explanation:
Given data:
Mass of Si = 10 g
Mass of Cl₂ = 60.0 g
Mass of SiCl₄ = ?
Solution:
Chemical equation:
Si + 2Cl₂ → SiCl₄
Number of moles of Si:
Number of moles = mass/ molar mass
Number of moles = 10 g/28 g/mol
Number of moles = 0.357 mol
Number of moles of Cl₂ :
Number of moles = mass/ molar mass
Number of moles = 60 g/70.9 g/mol
Number of moles = 0.846 mol
Now we will compare the moles of SiCl₄ with both reactants.
Cl₂ : SiCl₄
2 : 1
0.846 : 1/2×0.846=0.423
Si : SiCl₄
1 : 1
0.357 ; 0.357
Number of moles of SiCl₄ produce by Si are less so it will limiting reactant and limit the yield of SiCl₄.
Mass of SiCl₄:
Mass = number of moles × molar mass
Mass = 0.357 mol × 169.8 g/mol
Mass = 60.6 g
