Activation Energy Concept
Lower activation energy implies:
Select the correct option:
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More chemical kinetics Practice Questions
The rate constant of a reaction increases by a factor of one hundred when temperature rises from 300...
The rate constant of a reaction increases by a factor of one hundred when temperature rises from 300...
How is the instantaneous rate of a reaction obtained from a graph of concentration plotted against t...
How is the instantaneous rate of a reaction obtained from a graph of concentration plotted against t...
Radioactive decay obeys first order kinetics; if a sample has a half-life of 5 years, what percentag...
Radioactive decay obeys first order kinetics; if a sample has a half-life of 5 years, what percentag...
Define how the threshold energy of a reaction is related to the activation energy and the average en...
Define how the threshold energy of a reaction is related to the activation energy and the average en...
Why does the rate of a zero order reaction remain unchanged even when the concentration of the react...
Why does the rate of a zero order reaction remain unchanged even when the concentration of the react...
When the temperature of a reaction is raised from 300 K to 310 K, the rate roughly doubles; what doe...
When the temperature of a reaction is raised from 300 K to 310 K, the rate roughly doubles; what doe...
How does a positive catalyst increase the rate of a chemical reaction without itself being consumed ...
How does a positive catalyst increase the rate of a chemical reaction without itself being consumed ...
Distinguish between order and molecularity by deciding which quantity can be fractional for a multis...
Distinguish between order and molecularity by deciding which quantity can be fractional for a multis...
What are the units of the rate constant for a reaction that is found experimentally to be second ord...
What are the units of the rate constant for a reaction that is found experimentally to be second ord...
Acid-catalysed hydrolysis of an ester in a large excess of water follows first order kinetics; why i...
Acid-catalysed hydrolysis of an ester in a large excess of water follows first order kinetics; why i...
A plot of the natural logarithm of reactant concentration against time gives a straight line with ne...
A plot of the natural logarithm of reactant concentration against time gives a straight line with ne...
According to collision theory, why do only a small fraction of molecular collisions actually result ...
According to collision theory, why do only a small fraction of molecular collisions actually result ...
About This Question
- Subject
- chemistry
- Chapter
- chemical kinetics
- Topic
- activation energy concept
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Higher fraction of effective collisions
- Activation Energy (Ea): The minimum kinetic energy reacting molecules must possess for a collision to be effective.
- Relationship with k: From k=Ae−Ea/RT, a smaller Ea (in the numerator of the negative exponent) leads to a larger value of k.
- Microscopic View: As the energy barrier (Ea) is lowered, a larger fraction of the total molecules in the sample will possess enough kinetic energy to overcome it at any given temperature.
- Outcome: Higher frequency of successful collisions leads to a faster reaction.
This easy difficulty chemistry question is from the chapter chemical kinetics, covering the topic of activation energy concept. It appeared in the 2025 exam.
Looking for more practice? Explore all chemistry questions or browse chemical kinetics questions on RankGuru.