Question

Choose the statement(s) which are correct according to the collision theory.

• A. There must be collisions between the reactant molecules for a reaction to occur.
• B. All collisions between reactant molecules should form product.
• C. Decrease in the number of the molecules increases number of effective collision.
• D. Increase in the energy of the molecules increases number of effective collision.

Answer 1

Answer: (A), (D)

The correct options are
A There must be collisions between the reactant molecules for a reaction to occur.
D Increase in the energy of the molecules increases number of effective collision.

As per the collision theory:

• There must be collisions between the reactant molecules for a reaction to occur.
• All collisions between reactant molecules need not form a product.
• The product will form only when the reactant molecules have energy greater than threshold energy.
• Decrease in the number of molecules increases the number of effective collisions.
• Increase in the energy of the molecules increases the number of effective collision.