Problem

Reaction Rates (Sections)The isomerization of methyl isonitrile (CH3NC) to acetonitrile (C...

Reaction Rates (Sections)

The isomerization of methyl isonitrile (CH3NC) to acetonitrile (CH3CN) was studied in the gas phase at 215 °C, and the following data were obtained:

Time (s)

(Ch3nC) (M)

0

0.0165

2000

0.0110

5000

0.00591

8000

0.00314

12,000

0.00137

15,000

0.00074

(a) Calculate the average rate of reaction, in M/s, for the time interval between each measurement. (b) Calculate the average rate of reaction over the entire time of the data from t = 0 to t = 15,000 s. (c) Which is greater, the average rate between t = 2000 and t = 12,000 s, or between t = 8000 and t = 15,000 s? (d) Graph (CH3NC) versus time and determine the instantaneous rates in M/s at t = 5000 s and t = 8000 s.

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