What is the half-life? b how long would it take for the, Ask an Expert

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Methyl isocyanide, CH3NC, isomerizes when heated to give acetonitrile (methyl cyanide), CH3CN CH3NC (g) ? CH3CN (g) The reaction is first order. At 230 ºC, the rate constant for the isomerization is 6.3 x 10-4 /s. a) What is the half-life? b) How long would it take for the concentration of CH3CN to decrease to 25% of its initial value? c) To 12.5% of its initial value?

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