Q 2681656527.     Nitrogen pentaoxide decomposes according to equation:
`2N_2O_5 (g) -> 4NO_2 g + O_2 g`
This first order reaction was allowed to proceed at `40^oC` and the data below were collected:








`[N_2O_5] ` (M) Time (min)
0.400 20.0
0.209 40.0
0.151 60.0
0.109 80.0


(a) Calculate the rate constant. Include units with your answer.
(b) What will be the concentration of `N_2O_5` after 100 minutes?
(c) Calculate the initial rate of reaction.

CBSE-12th 2011

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