Nitrogen dioxide, NO2 decomposes into nitrogen monoxide (NO)

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Nitrogen dioxide, NO2 decomposes into nitrogen monoxide (NO)

Nitrogen dioxide, NO2 decomposes into nitrogen monoxide (NO) and oxygen gas O2, according to the following reaction.

2 NO₂(g) → 2NO(g) + O₂(g)

A sample of nitrogen dioxide in a sealed vessel, and the total pressure in the vessel was measured to be 0.0980 atm before any reaction had occurred.

The total pressure in the vessel was monitored over time during the reaction at 575 K, giving the following data.

(a) (20 points) Determine the rate law (in pressure) for this reaction at 575 K. Include the rate constant (with the correct unit) and reaction order.

(b) (15 points) The activation energy of this reaction is 81.4 kJ/mol. Calculate the total pressure in the vessel at 35.0 s if the temperature is set to 675 K.

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Nitrogen dioxide, NO2 decomposes into nitrogen monoxide (NO)

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