Question

The isomerization of methylisonitrile to acetonitrile (CH3NC(g) ???? CH3CN) is first order in CH3NC. The rate constant for the reaction is 9.45 x 10-5 s-1 at 478 K. What is the half-life of the reaction when the initial concentration of CH3NC is 0.0300 M?

Answer 1

The half life is
`H_(1/2)= 7333.3sec`

Step-by-step explanation:

The half life of a first order reaction is mathematically represented as

`H_(1/2) = (0.693)/(Rate Constant )`

Substituting
`9.45 * 10^(-5)s^(-1)` for the rate constant

`H_(1/2) = (0.693)/(9.45*10^(-5))`

`H_(1/2)= 7333.3sec`