In a study of the conversion of methyl isonitrile to acetonitrile in the gas phase at 250 CH 3 NC(g) CH 3 CN(g) the concentration of CH 3 NC was followed as a function of time It was found that a graph of ln[CH 3 NC] versus time in seconds gave a straight line with a slope of - 4.17 * 10 ^ - 3 * s ^ - 1 and a y intercept of -4.05 Based on this plot , the reaction is order in CH 3 NC and the rate constant for the reaction is

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