Chemistry Week 22 Skills Test

Name _______________________

Nitrogen (II) oxide reacts with oxygen gas to produce nitrogen (IV) oxide. Use the following experimental data to answer the questions.

Trial	Initial [NO]	Initial [O2]	Initial rate of formation of NO2
1	0.015 moles/dm3	0.010 moles/dm3	0.0041 moles/dm3. sec
2	0.030 moles/dm3	0.010 moles/dm3	0.0164 moles/dm3. sec
3	0.015 moles/dm3	0.020 moles/dm3	0.0082 moles/dm3. sec

1. Write the rate law expression for the reaction.

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2. Calculate the rate constant, k.

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