Chemistry - Chemical Kinetics Question with Solution | TestHub
Which among the following statements is NOT true about rate constant?
Options:
Answer:
Solution:
The rate of a reaction is directly proportional to the product of the concentrations of the reacting species raised to their respective powers. The proportionality constant in this rate law expression is the rate constant ().
The rate constant is independent of the initial concentrations of the reactants. It depends only on the temperature and the presence of a catalyst (as given by the Arrhenius equation ).
If the concentration of each reacting species is unity, the rate of the reaction becomes equal to the rate constant.
Thus, the statement that the rate constant is directly proportional to the product of concentrations of reacting species is incorrect.
Answer: It is directly proportional to the product of concentrations of reacting species.
