The rearrangement of methyl isonitrile, CH2NC to acetonitrile, CH3CN, is a first order reaction and has a half life of 0.76 h at 487 K

Question

Calculate the rate constant for this reaction in inverse seconds.

Answer 1

For a first order reaction, half life = ln (2) / k

t_1/2 = ln 2 / k

0.76 hr = 0.693 / k

k = 0.693 / 0.76 hr

0.76 k = 0.693

k = 0.912 hr^-1