A rightarrow BThe above reaction is of zero o | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) For a zero-order reaction,the half-life is given by $t_{1/2} = \frac{[A]_0}{2k}$.Given $t_{1/2} = 50 \ min$,we have $50 = \frac{[A]_0}{2k}$,which

Vedclass · Accepted Answer

$75$

Vedclass · Answer

(B) For a zero-order reaction,the half-life is given by $t_{1/2} = \frac{[A]_0}{2k}$.Given $t_{1/2} = 50 \ min$,we have $50 = \frac{[A]_0}{2k}$,which implies $k = \frac{[A]_0}{100}$.The integrated rate law for a zero-order reaction is $[A]_t = [A]_0 - kt$.We want to find the time $t$ when $[A]_t = \frac{1}{4}[A]_0$.Substituting the values: $\frac{1}{4}[A]_0 = [A]_0 - (\frac{[A]_0}{100})t$.Dividing by $[A]_0$: $\frac{1}{4} = 1 - \frac{t}{100}$.Rearranging: $\frac{t}{100} = 1 - \frac{1}{4} = \frac{3}{4}$.$t = \frac{3}{4} 	imes 100 = 75 \ min$.

$A \rightarrow B$
The above reaction is of zero order. The half-life of this reaction is $50 \ min$. The time taken for the concentration of $A$ to reduce to one-fourth of its initial value is $........... \ min$ (Nearest integer).

Similar Questions

If the rate of the reaction is equal to the rate constant,the order of the reaction is

$A$ zero order reaction is one whose rate is independent of

At $T \ K$,if the rate constant for a zero order reaction is $2.5 \times 10^{-3} \ M \ s^{-1}$,the time required for the initial concentration of reactant $R$ to fall from $0.10 \ M$ to $0.075 \ M$ at the same temperature in seconds is:

In which one of the following reactions,the rate constant has the unit $mol \ L^{-1} \ s^{-1}$?

For a reaction $A \to$ Products,a plot of $\log\,t_{1/2}$ versus $\log\,a_0$ is shown in the figure. If the initial concentration of $A$ is represented by $a_0,$ the order of the reaction is

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A \rightarrow B$The above reaction is of zero order. The half-life of this reaction is $50 \ min$. The time taken for the concentration of $A$ to reduce to one-fourth of its initial value is $........... \ min$ (Nearest integer).