Molecularity
The molecularity of a reaction can be:
Select the correct option:
Solution
1, 2, or 3
Molecularity is the total number of reactant species taking part in an elementary chemical reaction that must collide simultaneously to bring about the reaction.
- It is a theoretical property of an elementary step.
- It must be a positive integer (1,2 or 3). It cannot be zero, fractional, or negative.
- Molecularity >3 is extremely rare because the probability of more than three molecules colliding simultaneously with proper orientation is negligible.
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
More molecularity Practice Questions
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...
The unit of the rate constant for a second-order reaction is:
The unit of the rate constant for a second-order reaction is:
Which of the following statements correctly describes molecularity of a reaction?
Which of the following statements correctly describes molecularity of a reaction?
Which statement is correct?
Which statement is correct?
About This Question
- Subject
- chemistry
- Chapter
- chemical kinetics
- Topic
- molecularity
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
1, 2, or 3
Molecularity is the total number of reactant species taking part in an elementary chemical reaction that must collide simultaneously to bring about the reaction.
- It is a theoretical property of an elementary step.
- It must be a positive integer (1,2 or 3). It cannot be zero, fractional, or negative.
- Molecularity >3 is extremely rare because the probability of more than three molecules colliding simultaneously with proper orientation is negligible.
This easy difficulty chemistry question is from the chapter chemical kinetics, covering the topic of molecularity. It appeared in the 2025 exam.
Looking for more practice? Explore all chemistry questions or browse chemical kinetics questions on RankGuru.