Question

A relation is given below. Answer the following questions. 

Average kinetic energy + Activation energy = Threshold energy

1. Explain Average Kinetic Energy, Activation Energy, and Threshold Energy.

2. Give the equation showing the relation between rate constant and temperature and explain the terms.

3. Name the above equation.

Answer 1

1. Average kinetic Energy – The energy possessed by the reactant molecules which are involved in a chemical reaction. Threshold energy – The minimum amount of energy required for the reactant molecules in order to involve in a chemical reaction. Activation Energy – The excess amount of energy that is to be given to the reactant molecules in order to involve in a chemical reaction.

2. k = A e^-Ea/RT

• A → constant (frequency factor) 
• T → Temperature in Kelvin 
• E_a → Activation energy
• K → Rate constant

 3. Arrhenius equation.