Question

What happens to the rate of reaction when the frequency and number of effective collisions between reacting particles increases?
a. Increases
b. Decreases
c. Remains the same
d. Approaches Zero
e. None of the above

Answer 1

We know that the rate of reaction, also known as reaction rate, is the rate at which reactants become products. The collision between the reactant molecules produces products in a chemical reaction. For collisions to produce products: collisions should be effective, The correct orientation of reactant molecules in relation to one another should be there and to generate product molecules, all molecules should have a minimum quantity of energy.

Complete answer:
We should know that the reaction rate is proportional to the frequency of successful collisions between reactant particles. When atoms, ions, and molecules collide with enough kinetic energy and in a favourable orientation, they can react to generate products. And those collisions with the favourable orientation and enough kinetic energy are the effective collisions.
The possibility of reactants coming together to produce a product increases as the frequency and quantity of effective collisions between reacting particles increases, resulting in an increase in reaction rate.
Thus. Option a) is correct.
The rate of reaction does not decrease but increases when the frequency and number of effective collisions between reacting particles increases.
Thus, option b) is false.
The rate of reaction does not remain the same but increases when the frequency and number of effective collisions between reacting particles increases.
Thus, option c) is false.
The rate of reaction does not approach zero but increases from its initial rate when the frequency and number of effective collisions between reacting particles increases.
Thus, option d) is false.
And since option a) is already correct, option d) is not correct.

So, the correct answer is “Option a”.

Note:
A number of factors can influence the rate of a chemical reaction like the nature of the reaction. The physical state of the reactants, the number of reactants, the complexity of the reaction, and other factors all have a significant impact on the reaction rate. The rate of reaction increases as the concentration of the reactant increases, according to the collision theory. Also, the concentration of gases increases as pressure rises, resulting in a faster rate of reaction.