The formation of alumina, Al2O3, can be illustrated by the reaction below: 4 Al (s) + 3 O2 (g) → 2 Al2O3 (s). At 750 K it takes 267 seconds for the initial concentration of Al2O3 to increase from 6.18 x 10-5 M to 5.11 x 10-4 M. What is the average rate of Al?

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Multiple Choice

The formation of alumina, Al₂O₃, can be illustrated by the reaction below:
4 Al (s) + 3 O₂ (g) → 2 Al₂O₃ (s).
At 750 K it takes 267 seconds for the initial concentration of Al₂O₃ to increase from 6.18 x 10^-5 M to 5.11 x 10^-4 M. What is the average rate of Al?

8.41×10^–7 M/s

1.68×10^–6 M/s

3.36×10^–6 M/s

4.21×10^–7 M/s

Master Stoichiometric Rate Calculations Concept 1 with a bite sized video explanation from Jules Bruno