If you had used [OH ] of 0.030m and 0.040m instead of the concentrations you did use in the procedure, this means that you can not have identical Rate Law for two systems with different initial concentrations.
For the violet crystals, we use the abbreviation Vc
Vc + OH
According to the rate law:
Rate law = K × Cvc × Coh
In this reaction, we take violet crystals (Vc) as the limiting reactant
Cvc = initial Cvc × (1 - x)
Coh = initial Cvc × (1 - x)
Substitute the value in the initial equation:
Rate law = K × Cvc × Coh
Rate law = K × (Cvc 1)² × (1-x)²
By the equation, it is proved that rate law is a function of the reagent's initial concentration.
It proves that two systems having different initial concentrations does not follow identical rate law.
You can also learn about rate law and limiting reactant from the following question:
https://brainly.com/question/4222261
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