Which of the following gives the equation that relates the rate of consumption of Al to the rate of formation of Al2O3 for the reaction below?
8Al+3Fe3O4→4Al2O3+9Fe
Select the correct answer below:
1/8Δ[Al]Δt=14Δ[Al2O3]Δt
−1/8Δ[Al]Δt=14Δ[Al2O3]Δt
−8Δ[Al]Δt=4Δ[Al2O3]Δt
8Δ[Al]Δt=4Δ[Al2O3]Δt
rate of reaction is given as:
rate = sign * (1/x) * d[concentration]/dt
sign is negative for reactant and positive for product
x is stoichiometric coefficient in chemical equation
Rate in terms of Al is:
Rate = (-1/8)Δ[Al]/Δt
Rate in terms of Al2O3 is:
Rate = (1/4)Δ[Al2O3]/Δt
Equate both:
(-1/8)Δ[Al]/Δt = (1/4)Δ[Al2O3]/Δt
Answer: option 2
Which of the following gives the equation that relates the rate of consumption of Al to...
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Fe2O3+Al --> Al2O3+Fe
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