The isomerization of methylisonitrile to acetonitrile
CH₃NC(g) → CH₃CN(g)
Is first order in CH₃NC.The rate constant for the reaction is 4.76 × 10^-4 s^-1 at 498 K.The half-life of the reaction when the initial [CH₃NC] is 0.030 M is ________ s.

Question

Quizplus · Accepted Answer

The half-life of a first-order reaction is defined by the equation:

t1/2 = ln(2)/k

Where k is the rate constant of the reaction. Substituting the given values into the equation, we get:

t1/2 = ln(2)/(4.76 × 10-4 s-1) = 1.46 × 103 s

Therefore, the correct answer is D, 1.46 × 103 s.

The Isomerization of Methylisonitrile to Acetonitrile