(A) For a zero-order reaction, the rate constant $k$ is given by $k = \frac{[A]_0}{2t_{1/2}}$.Given $[A]_0 = 2.0 \text{ mol L}^{-1}$ and $t_{1/2} = 1

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(A) For a zero-order reaction, the rate constant $k$ is given by $k = \frac{[A]_0}{2t_{1/2}}$.Given $[A]_0 = 2.0 \text{ mol L}^{-1}$ and $t_{1/2} = 1 \text{ hour}$, so $k = \frac{2.0}{2 \times 1} = 1.0 \text{ mol L}^{-1} \text{ h}^{-1}$.The time $t$ required for a zero-order reaction to change concentration from $[A]_1$ to $[A]_2$ is given by $t = \frac{[A]_1 - [A]_2}{k}$.Substituting the values: $t = \frac{0.50 - 0.25}{1.0} = \frac{0.25}{1.0} = 0.25 \text{ hour}$.

Class 12 Chemistry Chemical Kinetics Zero order reaction

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The half-life of a zero-order reaction is $1 \text{ hour}$. If the initial concentration of the reactant is $2.0 \text{ mol L}^{-1}$, find the time required to decrease the concentration from $0.50 \text{ mol L}^{-1}$ to $0.25 \text{ mol L}^{-1}$. (in $\text{ hour}$)

MHT CET 2026 All MHT CET

A
$0.25$
B
$0.50$
C
$0.75$
D
$1.00$

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The half-life of a zero-order reaction is $1 \text{ hour}$. If the initial concentration of the reactant is $2.0 \text{ mol L}^{-1}$, find the time required to decrease the concentration from $0.50 \text{ mol L}^{-1}$ to $0.25 \text{ mol L}^{-1}$. (in $\text{ hour}$)

Similar Questions

For the reaction,$A \rightarrow$ products,if the graph of $[A]$ vs time gives a straight line,predict the order of the reaction.

Calculate the rate constant of a zero order reaction if it is $90 \%$ completed in $90 \ s$.

If the rate of a reaction is equal to the rate constant,what is the order of the reaction?

The rate constant of a zero-order reaction is $0.2 \ mol \ L^{-1} \ hr^{-1}$. If the concentration of the reactant after $0.5 \ hr$ is $0.05 \ M$,then the initial concentration of the reactant is ....... $M$.

In the following reaction $A \to B + C,$ the rate constant is $0.001 \ M \ s^{-1}.$ If we start with $1 \ M$ of $A,$ then the concentrations of $A$ and $B$ after $10 \ minutes$ are respectively:

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