Composite Reactions & the Steady State Approximation

HALOGENATION OF PROPANONE

Hint

The Steady State Approximation (SSA) is the setting of the rate of change of concentration of a species equal to zero. It is usually applied to the intermediate species, provided that the intermediate is highly reactive and present in low concentrations.

The Steady State Approximation

In the introduction to this chapter the following facts were given about the system:

Proposed mechanism:
[Halogenation of Propanone - Mechanism A]

Therefore, if the Steady State Approximation is to be used, it should be applied to

d[H+]/dt

d[I-]/dt

d[I2]/dt

d[Pe]/dt

d[PI]/dt

d[Pk]/dt