15. Chemical Kinetics

Stoichiometric Rate Calculations

Guided videos.

Data Table for Three Experiments
Experiment	Initial [NH₄⁺]	Initial [NO₂]	Initial rate (M/s)
Experiment 1	0.24 M	0.10 M	7.2 × 10^-6 M/s
Experiment 2	0.12 M	0.10 M	3.6 × 10^-6 M/s
Experiment 3	0.12 M	0.15 M	5.4 × 10^-6 M/s

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Multiple Choice

Using the data below (also from question 6), determine the overall order of the reaction.

Data Table for Three Experiments
Experiment	Initial [NH₄⁺]	Initial [NO₂]	Initial rate (M/s)
Experiment 1	0.24 M	0.10 M	7.2 × 10^-6 M/s
Experiment 2	0.12 M	0.10 M	3.6 × 10^-6 M/s
Experiment 3	0.12 M	0.15 M	5.4 × 10^-6 M/s

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Multiple Choice

Write the rate law for the following mechanism:

Step 1: NO₂ + NO₂ → NO₃ + NO (slow)

Step 2: NO₃ → NO + O₂ (fast)

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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?

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15. Chemical Kinetics

Stoichiometric Rate Calculations

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