(A) For the given reaction,$\Delta H = -44.12 \ kcal$. Since $\Delta H < 0$,the reaction is exothermic.We know the relationship between enthalpy chang

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(A) For the given reaction,$\Delta H = -44.12 \ kcal$. Since $\Delta H We know the relationship between enthalpy change and activation energies is given by $\Delta H = E_f - E_b$,where $E_f$ is the activation energy of the forward reaction $(E_2)$ and $E_b$ is the activation energy of the backward reaction $(E_1)$.Thus,$\Delta H = E_2 - E_1$.Since $\Delta H$ is negative,$E_2 - E_1 E_2$.

Class 12 Chemistry Chemical Kinetics Collision theory, Energy of activation and Arrhenius equation

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The $\Delta H$ value of the reaction $H_2 + Cl_2 \rightleftharpoons 2HCl$ is $-44.12 \ kcal$. If $E_1$ is the activation energy of the backward reaction and $E_2$ is the activation energy of the forward reaction,then for the above reaction:

A
$E_1 > E_2$
B
$E_1 < E_2$
C
$E_1 = E_2$
D
$\Delta H$ is not related to $E_1$ and $E_2$

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Chemical Kinetics

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Collision theory, Energy of activation and Arrhenius equation

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The activation energy of a certain reaction is $87 \ kJ \ mol^{-1}$. When the temperature is decreased from $37^{\circ} C$ to $15^{\circ} C$,what is the ratio of the rate constant at $37^{\circ} C$ to that at $15^{\circ} C$ for this reaction (in $/ 1$)?

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The $\Delta H$ value of the reaction $H_2 + Cl_2 \rightleftharpoons 2HCl$ is $-44.12 \ kcal$. If $E_1$ is the activation energy of the backward reaction and $E_2$ is the activation energy of the forward reaction,then for the above reaction:

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The rate constant,the activation energy and the Arrhenius parameter of a chemical reaction at $25\,^oC$ are $3.0 \times 10^{-4}\,s^{-1}$,$104.4\,kJ\,mol^{-1}$ and $6.0 \times 10^{14}\,s^{-1}$ respectively. The value of the rate constant as $T \to \infty$ is

For a certain reaction,a large fraction of molecules has energy more than the threshold energy,yet the rate of reaction is very slow. Why?

The activation energy of a certain reaction is $87 \ kJ \ mol^{-1}$. When the temperature is decreased from $37^{\circ} C$ to $15^{\circ} C$,what is the ratio of the rate constant at $37^{\circ} C$ to that at $15^{\circ} C$ for this reaction (in $/ 1$)?

On increasing the temperature,the rate of the reaction increases because of

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