The decomposition of nitrogen dioxide represents a second order process. 2 nitro

Question

The decomposition of nitrogen dioxide represents a second order process. 2 nitrogen dioxidedioxygen 2 nitrogen monoxide Answer the following questions about the decomposition of nltrogen dloxide. Report all answers to three signlficant figures. 1 The initial concentration o nitrogen dioxide is 7.697×10 1 M however a ter 1.52 h the concentration decreases to 5.773×10-1 M. Calculate the rate constant in M hr for this process Submit Answer Tries o/3 2. If the initial concentration of nitrogen dioxide is 7.697×10-1 M, calculate the concentration in M of nitrogen dioxide after 1 hrs. Submit Answer Tries 0/3

Explanation / Answer

For second order reaction-

kt = 1/[A]t - 1/[A]o

1. k = 1/[A]t - 1/[A]o/t

= 1/5.773*10-1M - 1/7.697*10-1M/1.52hr

k = 0.4329M-1/1.52hr

k = 0.285M-1hr-1

2. 1/[A]t = kt + 1/[A]o

= 0.285M-1hr-1*1hr + 1/7.697*10-1M

= 0.285M-1 + 12.992M-1

1/[A] = 13.277M-1

[A] = 0.07531M-1

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