CH3NC(g) CH3CN(g) [ CH3NC ], M 2.83×10-2 1.42×10-2 7.10×10-3 3.55×10-3   time, s 0 191 382 573 Hint: It is not necessary to graph these data. (1) The half life observed for this reaction

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The following data are for the conversion of methyl isonitrile to acetonitrile in the gas phase at 250 °C.

CH3NC(g) CH3CN(g)

[ CH3NC ], M 2.83×10-2 1.42×10-2 7.10×10-3 3.55×10-3
  time, s 0 191 382 573



Hint: It is not necessary to graph these data.

(1)
The half life observed for this reaction is _______s .

(2)
Based on these data, the rate constant for this _______(zerofirstsecond) order reaction is _______s -1.

 

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 [CH3NC ]       2.83×10-2     1.42×10-2         7.10×10-3            3.55×10-3      Mtime,                     0                    191                     382                                573  S Formula ,  unit of rate constant  = [concentration ]1-n  [time]-1                      where n = order of the reaction when n=1 or 1st order reaction , rate constant unit is second-1 In question given that , rate constant unit is second-1 , which confirm that , reaction is 1st order .             

 

 

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