(B) For a $1^{st}$-order reaction,the half-life is given by $t_{1/2} = \frac{0.693}{k}$,which is independent of the initial concentration $[A]_0$. For

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the half-life of a $1^{st}$-order reaction does not depend on $[A]_0$; the half-life of a $2^{nd}$-order reaction does depend on $[A]_0$

(B) For a $1^{st}$-order reaction,the half-life is given by $t_{1/2} = \frac{0.693}{k}$,which is independent of the initial concentration $[A]_0$. For a $2^{nd}$-order reaction,the half-life is given by $t_{1/2} = \frac{1}{k[A]_0}$,which is inversely proportional to the initial concentration $[A]_0$.

Class 12 Chemistry Chemical Kinetics Rate law , Rate constant , Order of Reaction and Molecularity

The correct difference between $1^{st}$-order and $2^{nd}$-order reaction is that:

NEET 2018 All NEET

A
the rate of a $1^{st}$-order reaction does not depend on reactant concentration; the rate of a $2^{nd}$-order reaction does depend on reactant concentrations
B
the half-life of a $1^{st}$-order reaction does not depend on $[A]_0$; the half-life of a $2^{nd}$-order reaction does depend on $[A]_0$
C
$1^{st}$-order reaction can be catalyzed; a $2^{nd}$-order reaction cannot be catalyzed.
D
the rate of a $1^{st}$-order reaction does depend on reactant concentrations; the rate of a $2^{nd}$-order reaction does not depend on reactant concentrations

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Class 12

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Chemical Kinetics

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Rate law , Rate constant , Order of Reaction and Molecularity

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The conversion of molecules $X$ to $Y$ follows second order kinetics. If the concentration of $X$ is increased to three times,how will it affect the rate of formation of $Y$?

Medium

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In the reaction $A + B \to \text{Products}$,the initial concentration of both $A$ and $B$ is $0.1 \, M$. When the concentration decreases to $1.0 \times 10^{-2} \, M$,the half-life period increases by ten times. The rate of the reaction is:

Medium

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The rate constant is the same for $3$ reactions of order $I, II$,and $III$,respectively,with the unit of concentration being in moles per litre. If the concentration of the reactant is unity,the rates of reaction $R_1, R_2, R_3$ will be:

MediumAP EAMCET 2020

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For the following reaction: $NO_{2(g)} + CO_{(g)} \to NO_{(g)} + CO_{2(g)}$,the rate law is: $\text{Rate} = k [NO_2]^2$. If $0.1 \ mol$ of gaseous carbon monoxide is added at constant temperature to the reaction mixture,which of the following statements is true?

MediumAIIMS 2016

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The rate constant for the reaction $2N_2O_5 \to 4NO_2 + O_2$ is $3.0 \times 10^{-5} \, sec^{-1}$. If the rate is $2.40 \times 10^{-5} \, M \, sec^{-1}$,then the concentration of $N_2O_5$ (in $M$) is?

Medium

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The correct difference between $1^{st}$-order and $2^{nd}$-order reaction is that:

Similar Questions

The conversion of molecules $X$ to $Y$ follows second order kinetics. If the concentration of $X$ is increased to three times,how will it affect the rate of formation of $Y$?

In the reaction $A + B \to \text{Products}$,the initial concentration of both $A$ and $B$ is $0.1 \, M$. When the concentration decreases to $1.0 \times 10^{-2} \, M$,the half-life period increases by ten times. The rate of the reaction is:

The rate constant is the same for $3$ reactions of order $I, II$,and $III$,respectively,with the unit of concentration being in moles per litre. If the concentration of the reactant is unity,the rates of reaction $R_1, R_2, R_3$ will be:

For the following reaction: $NO_{2(g)} + CO_{(g)} \to NO_{(g)} + CO_{2(g)}$,the rate law is: $\text{Rate} = k [NO_2]^2$. If $0.1 \ mol$ of gaseous carbon monoxide is added at constant temperature to the reaction mixture,which of the following statements is true?

The rate constant for the reaction $2N_2O_5 \to 4NO_2 + O_2$ is $3.0 \times 10^{-5} \, sec^{-1}$. If the rate is $2.40 \times 10^{-5} \, M \, sec^{-1}$,then the concentration of $N_2O_5$ (in $M$) is?

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