First Order Independent

[April_Tello_2H]

Why is the first order consider to be independent, what factors make this independent compared to the zero order and the second order ? Please let me know as this still creates confusion for me ?!

[306092134 14B 3E]

I am a little bit confused on what you mean by the 1st order reaction considered to be independent? Just to add to clarifying the differences, I believe -- in a zero order reaction, the rate is independent of the concentration. In a first-order reaction, the rate depends on the concentration, and in a second order reaction, the rate is proportional to the square of the concentration.

[Lan Wei 3I]

I'm assuming you are referring to the half-life of a first-order rxn being independent from the initial concentration. This is because the rate of the reaction depends on the concentration at that given moment. In other words, the half-life of a first-order reaction is constant. This is why when you look at the half-life equation of a 1st order rxn, which is t1/2= 0.693/k, you don't see the initial concentration in there.