Dear colleagues,

I would really appreciate if someone could give me at least a hint...

Let's imagine two competitive reactions: one has the 1st order on a substrate A (e.g. intramolecular rearrangement), and the other one has the 2nd order (e.g. dimerization).

V1=k1[A]

V2=k2[A]^{2}

Let say, k1 is 2 times higher than k2. Now, if we have concentrations [A] > 2M, this will mean that the **inter**molecular rxn **with the lower rate constant** will be **faster** than the **intra**molecular rxn **with the higher rate constant**. For example, if [A]=3M, dimerization will be 1.5 times faster...

I thought may be all these kinetics laws are derived with an assumption of concentrations <1M, but I have not found any restrictions...

Is there a mistake? It is contrary to my intuition.

Thanks in advance.