rates of reactions

• • In a reaction, the concentration of reactants decreases with time
• • In a reaction, the concentration of products increases with time.
• • For the reactions to take place the particles should collide or bump into each other.
• • The particles should collide with the minimum energy required to start the reaction- Activation Energy.
• • The collision with the energy equal to or greater than activation energy is successful collision.
• • The particles should have correct orientation for the reaction to take place.
• • Catalysts increases the rate of the reaction by providing an alternative route
  • The alternative route lowers the activation energy
  • As the activation energy is lowered there are more number of particles having energy equal to or greater than the activation energy increasing the rate of the reaction.
  • Required in small quantity and is regenerated after the reaction.