(B) For a zero order reaction,the rate constant $k$ is given by the formula: $k = \frac{[A]_0 - [A]_t}{t}$ Given: $[A]_0 = 1.2 \ mol \ dm^{-3}$,$[A]_t

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$0.2 \ mol \ dm^{-3} \ min^{-1}$

(B) For a zero order reaction,the rate constant $k$ is given by the formula: $k = \frac{[A]_0 - [A]_t}{t}$ Given: $[A]_0 = 1.2 \ mol \ dm^{-3}$,$[A]_t = 0.4 \ mol \ dm^{-3}$,and $t = 240 \ s$. Converting time to minutes: $t = \frac{240 \ s}{60 \ s/min} = 4 \ min$. Substituting the values: $k = \frac{1.2 - 0.4}{4} = \frac{0.8}{4} = 0.2 \ mol \ dm^{-3} \ min^{-1}$.

Class 12 Chemistry Chemical Kinetics Zero order reaction

Easy

For a zero order reaction,$A \longrightarrow \text{product}$,the concentration of $A$ decreases from $1.2 \ mol \ dm^{-3}$ to $0.4 \ mol \ dm^{-3}$ in $240 \ s$. What is the rate constant of the reaction?

MHT CET 2024 All MHT CET

A
$0.1 \ mol \ dm^{-3} \ min^{-1}$
B
$0.2 \ mol \ dm^{-3} \ min^{-1}$
C
$0.3 \ mol \ dm^{-3} \ min^{-1}$
D
$0.4 \ mol \ dm^{-3} \ min^{-1}$

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Chemical Kinetics

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Zero order reaction

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MHT CET 2024 Paper All MHT CET years →

What is the concentration (in $mol \ L^{-1}$) of the product $B$ after $20 \ s$ in the following reaction? Given that $A \longrightarrow 3B$,rate $= k[A]^0$. The data is provided in the table below:
| Time $(s)$ | Concentration of reactant $A$ $(mol \ L^{-1})$ |
| :--- | :--- |
| $0$ | $0.1$ |
| $15$ | $0.05$ |
| $20$ | $0.1 - x$ |

DifficultAP EAMCET 2017

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The rates of a certain reaction $(dc/dt)$ at different times are as follows:
Time $(sec)$ Rate $(mole \ litre^{-1} \ sec^{-1})$
$0$ $2.8 \times 10^{-2}$
$10$ $2.78 \times 10^{-2}$
$20$ $2.81 \times 10^{-2}$
$30$ $2.79 \times 10^{-2}$

The reaction is:

Time $(sec)$	Rate $(mole \ litre^{-1} \ sec^{-1})$
$0$	$2.8 \times 10^{-2}$
$10$	$2.78 \times 10^{-2}$
$20$	$2.81 \times 10^{-2}$
$30$	$2.79 \times 10^{-2}$

Medium

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In a zero-order reaction,if the initial concentration of the reactant is doubled,the time required for half the reactant to be consumed:

DifficultKVPY 2011

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$A \rightarrow B$
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).

MediumJEE MAIN 2023

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What is a zero order reaction? Determine the integrated rate equation for a zero order reaction $R \to P$.

Difficult

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For a zero order reaction,$A \longrightarrow \text{product}$,the concentration of $A$ decreases from $1.2 \ mol \ dm^{-3}$ to $0.4 \ mol \ dm^{-3}$ in $240 \ s$. What is the rate constant of the reaction?

Similar Questions

The rates of a certain reaction $(dc/dt)$ at different times are as follows:Time $(sec)$Rate $(mole \ litre^{-1} \ sec^{-1})$$0$$2.8 \times 10^{-2}$$10$$2.78 \times 10^{-2}$$20$$2.81 \times 10^{-2}$$30$$2.79 \times 10^{-2}$The reaction is:

In a zero-order reaction,if the initial concentration of the reactant is doubled,the time required for half the reactant to be consumed:

$A \rightarrow B$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).

What is a zero order reaction? Determine the integrated rate equation for a zero order reaction $R \to P$.

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The rates of a certain reaction $(dc/dt)$ at different times are as follows:
Time $(sec)$ Rate $(mole \ litre^{-1} \ sec^{-1})$
$0$ $2.8 \times 10^{-2}$
$10$ $2.78 \times 10^{-2}$
$20$ $2.81 \times 10^{-2}$
$30$ $2.79 \times 10^{-2}$

The reaction is:

$A \rightarrow B$
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).