Dinitrogen pentaoxide, N 2 O 5 (molar mass = 108.02 g/mol), decomposes by first-

Question

Dinitrogen pentaoxide, N2O5 (molar mass = 108.02 g/mol), decomposes by first-order kinetics with a half-life of 5.20 hours at 25ºC.

            a)         What is the rate constant for this decomposition at 25ºC?

            b)         If 5.50 grams of N2O5 is injected into a 2.00 Liter container at 25ºC, then how much will remain after 4.00 hours?

            c)         If the half-life of the reaction is 2.85 hours when the temperature is 35ºC, then what is the activation energy for the decomposition?

Explanation / Answer

Dinitrogen pentaoxide, N 2 O 5 (molar mass = 108.02 g/mol), decomposes by first-

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