Question

Which of the following statements regarding first order reaction is/are false

(A) Rate of reaction is independent of concentration of reactants

(B) Rate constant is independent of concentration of reactants

(C) If half life of the reaction is 50 sec, then t_{3/ 4} of the reaction will be 150 sec.

(D) Half life of the reaction is independent of the concentration of the reactant,

Answer 1

Correct Option  (A) Rate of reaction is independent of concentration of reactants (C) If half life of the reaction is 50 sec, then t_{3/ 4}of the reaction will be 150 sec.

Explanation: 

For any first order reactino say A →product, the rate will be

Rate = k[A].

From which we can predict that (a) is correct.

For first order reaction, t_{3/ 4} = 2t_1/2 therefore (c) is correct