Answer:
All of the above are very much valid
Step-by-step explanation:
The two key steps in determining rate law are as follows;
1. The sum of each elementary step in a reaction mechanism must yield the overall reaction equation.
2. The rate law of the rate-determining step must agree with the experimentally found rate law.
So therefore, determination of rate constant for rate determining step, rate constant for the reverse reaction and concentration on the product of the equilibrium are all under these two major keys.