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N—butane fuel (c4h10) is burned with a stoichiometric amount of air. determme the mass fraction of each product. also, calculate the mass of carbon dioxide in the products and m…
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N—butane fuel (c4h10) is burned with a stoichiometric amount of air. determme the mass fraction of each product. also, calculate the mass of carbon dioxide in the products and m…
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Mar 2, 2019
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N—butane fuel (c4h10) is burned with a stoichiometric amount of air. determme the mass fraction of each product. also, calculate the mass of carbon dioxide in the products and mass of air required when 6.14 kg of fuel is burned.
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The balanced equation for the burning of N-butane is;
2C₄H₁₀ + 13O₂ → 8CO₂ + 10H₂O
stoi. ratio 2 : 13 : 8 : 10
molar mass 58 32 44 18
moles X 13 X/2 8X/2 10X/2
105.86 688.10 423.45 529.31
produced mass 18632.8 g 9527.6 g
moles of n-butane = X = 6.14 x 10³ g / 58 g mol⁻¹
hence other moles of compounds can be calculated.
Mass = molar mass * moles
mass fraction = mass / total mass
hence the mass fraction of
CO₂ = 18632.8 / 6.14 x 10³ = 3.03
H₂O = 9527.6 / 6.14 x 10³ = 1.55
the required mass of air = 688.10 x 32 = 22019.2 g = 2.20 kg
Mmilo
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Mar 8, 2019
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