Which of following statement is correct? a. The half life of first order reactio
ID: 913284 • Letter: W
Question
Which of following statement is correct?
a. The half life of first order reaction is independent of the initial concentrations of the reactants
b. The half-life of a first order and zero order reaction are both always independent of the initial concentrations of the reactants
c. The half-life of a zero order reaction is independent of the initial concentration of the reactants.
d. The half-life of a first order reaction is always dependent of the initial concentrations of the reactants
I need help!!!!!
Explanation / Answer
The half time of zero order of reaction is following:
t1/2=[A]o/ 2k
For zero-order reactions, the half-life depends on the initial concentration of reactant and the rate constant.
The half time of firstorder of reaction is following:
t1/2=ln2/ k 0.693/ k
This indicates that the half-life of a first-order reaction is a constant and not depending on the initial concentration.
Hence the correct answer is a. The half life of first order reaction is independent of the initial concentrations of the reactants