The isomerization of methylisonitrile to acetonitrile CH 3NC(g) → CH 3CN( g) is first order in CH 3NC. The half-life of the reaction is 2.00 x 10 s at 525 K. The rate constant when the initial [CH 3NC] is 0.030 M is 0.167 3.47 x 10 3 5.99 1.05 x 105 2.88 x 102

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