NEET Chemistry Order of Reaction Assertion Reason Question
Assertion (A): The half-life of a first order reaction is independent of the initial concentration of the reactants.
Reason (R): For a first order reaction, the rate constant k is directly proportional to the initial concentration of the reactants.
Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false.
A is false but R is true.
Correct Answer
Detailed Explanation
The half-life of a first order reaction is indeed independent of the initial concentration, as shown by t1/2 = 0.693/k. However, the rate constant k is not dependent on the initial concentration.
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