(B) positive catalyst provides an alternative reaction pathway with a lower activation energy $(E_a)$.By decreasing the activation energy,a larger fra

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Decreases the activation energy of the reaction

(B) positive catalyst provides an alternative reaction pathway with a lower activation energy $(E_a)$.By decreasing the activation energy,a larger fraction of reactant molecules possess sufficient energy to cross the energy barrier,thereby increasing the rate of the chemical reaction.

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

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Catalysts are used to increase the rate of a chemical reaction. Because it

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A
Increases the activation energy of the reaction
B
Decreases the activation energy of the reaction
C
Brings about improper orientation of reactant molecules
D
Increases the potential energy barrier

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

Chemical Kinetics

Subtopic

Collision theory, Energy of activation and Arrhenius equation

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When the temperature of a reaction is increased from $300 \ K$ to $310 \ K$,the rate of the reaction increases by $2.5$ times. If the rate constant of the reaction at $300 \ K$ is $K$,what will be the rate constant at $310 \ K$?

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The rate constant for a reaction can be increased by $\underline{a}$ the stability of the reactant or by $\underline{b}$ the stability of the transition state. Select the correct choice for $a$ and $b$.

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The rate constant for the reaction,$COCl_{2(g)} \longrightarrow CO_{(g)} + Cl_{2(g)}$ is given by $\ln[k / (min^{-1})] = -11067 / T(K) + 31.33$. The temperature at which the rate of this reaction will be doubled from that at $25^{\circ} C$ is $..... \, ^{\circ} C$.

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Which of the following statements is correct regarding the Arrhenius equation and reaction kinetics?

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Consider the following energy profile for the reaction $X + Y \rightarrow R + S$. Which of the following deductions about the reaction is not correct?

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Catalysts are used to increase the rate of a chemical reaction. Because it

Similar Questions

When the temperature of a reaction is increased from $300 \ K$ to $310 \ K$,the rate of the reaction increases by $2.5$ times. If the rate constant of the reaction at $300 \ K$ is $K$,what will be the rate constant at $310 \ K$?

The rate constant for a reaction can be increased by $\underline{a}$ the stability of the reactant or by $\underline{b}$ the stability of the transition state. Select the correct choice for $a$ and $b$.

The rate constant for the reaction,$COCl_{2(g)} \longrightarrow CO_{(g)} + Cl_{2(g)}$ is given by $\ln[k / (min^{-1})] = -11067 / T(K) + 31.33$. The temperature at which the rate of this reaction will be doubled from that at $25^{\circ} C$ is $..... \, ^{\circ} C$.

Which of the following statements is correct regarding the Arrhenius equation and reaction kinetics?

Consider the following energy profile for the reaction $X + Y \rightarrow R + S$. Which of the following deductions about the reaction is not correct?

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