Question

An increase in the concentration of the reactants of a reaction leads to change in :

• A. activation energy
• B. heat of reaction
• C. threshold energy
• D. collision frequency

Answer 1

Answer: (D)

collision frequency

Answer 2

Collision frequency $\propto$ number of reactant molecules per unit volume
As concentraction o f reactants o f a reaction increase the number of reactant molecules per unit volume increase which increases the collision frequency