The following data were collected for the conversion of methyl isonitrile to ace

Question

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

CH3NC(g)--------->CH3CN(g)

(a) What is the half-life for the reaction when [CH3NC] = 4.20×10-2 M?

_______s

(b) What is the half-life for the reaction when [CH3NC] = 2.10×10-2 M? ______s

(c) Is the reaction first order? yes or no?

If so, what is the rate constant for the reaction? (If not first order leave blank).__________________ s-1

Explanation / Answer

a) when [CH3NC] is 4.20 x 10-2  then half life = 160 s

b) when [CH3NC] is 2.10 x 10-2  then half life = 160 s

so half is independent on concentration reaction is first order.

so Yes

d) K = 0.693 /t1/2

K = 0.693 / 160

K = 4.33 x 10-3s-1

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