(A) The rate of reaction is defined as the change in concentration (or moles) over time. Rate $= -\frac{\Delta n}{\Delta t} = -\frac{n_2 - n_1}{t_2 -

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(A) The rate of reaction is defined as the change in concentration (or moles) over time. Rate $= -\frac{\Delta n}{\Delta t} = -\frac{n_2 - n_1}{t_2 - t_1}$ Given: $n_1 = 2.2 \, mol$,$n_2 = 1.4 \, mol$,$\Delta t = 50 \, min = 50 \times 60 \, s = 3000 \, s$. Rate $= -\frac{1.4 - 2.2}{3000} = \frac{0.8}{3000} \, mol \, s^{-1}$. Rate $= 2.666... \times 10^{-4} \approx 2.67 \times 10^{-4} \, mol \, s^{-1}$.

Class 12 Chemistry Chemical Kinetics Rate of a reaction

Medium

In the hydrogenation of ethene at $298 \, K$,the number of moles of hydrogen decreases from $2.2$ to $1.4$ in $50 \, min$. Calculate the rate of reaction in units of $mol \, s^{-1}$.

A
$2.67 \times 10^{-4}$
B
$2.67 \times 10^{-8}$
C
$4.86 \times 10^{-3}$
D
$2.96 \times 10^{-4}$

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Chemical Kinetics

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Rate of a reaction

Consider the following reaction: $2 NO_{2(g)} + F_{2(g)} \longrightarrow 2 NO_2F_{(g)}$. The expression for the rate of reaction in terms of the rate of change of partial pressure of reactant and product is/are:

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For the reaction $H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}$,the rate of reaction is expressed as:

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Explain: What is instantaneous rate? How is it determined?

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For the reaction $I_2 + 2S_2O_3^{2-} \rightarrow 2I^{-} + S_4O_6^{2-}$,which of the following expressions correctly represents the rate of reaction?

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In the reaction $2SO_3 \to 2SO_2 + O_2$,initially $40 \ g$ of $SO_3$ is heated in a $100 \ mL$ container. If after $10 \ min$,$3.2 \ g$ of $O_2$ is formed,find the rate of reaction in $mol \ L^{-1} \ min^{-1}$.

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In the hydrogenation of ethene at $298 \, K$,the number of moles of hydrogen decreases from $2.2$ to $1.4$ in $50 \, min$. Calculate the rate of reaction in units of $mol \, s^{-1}$.

Similar Questions

Consider the following reaction: $2 NO_{2(g)} + F_{2(g)} \longrightarrow 2 NO_2F_{(g)}$. The expression for the rate of reaction in terms of the rate of change of partial pressure of reactant and product is/are:

For the reaction $H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}$,the rate of reaction is expressed as:

Explain: What is instantaneous rate? How is it determined?

For the reaction $I_2 + 2S_2O_3^{2-} \rightarrow 2I^{-} + S_4O_6^{2-}$,which of the following expressions correctly represents the rate of reaction?

In the reaction $2SO_3 \to 2SO_2 + O_2$,initially $40 \ g$ of $SO_3$ is heated in a $100 \ mL$ container. If after $10 \ min$,$3.2 \ g$ of $O_2$ is formed,find the rate of reaction in $mol \ L^{-1} \ min^{-1}$.

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