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Rates of Reactions (Factors Affecting Reaction Rate (Nature of the…

- - - - Reactions between ions proceed rapidly compared to molecules. Why? Acid and Bases are often oppositely charged and thus, attract each other.
        
        Rate of reactions for molecules are usually slower than ions. Why? Existing bonds need to be broken before new bonds can formed.
  - - - As the reaction progresses and concentration increases, reaction rate decreases as a reactant is more likely to collide with a product than a reactant.
  - - - Frequency of collision increase - Number of effective collision increases.
- - - - Enthalpy change cannot be used to predict activation energy of a reaction.
- - - - Reversible Reaction and Activated Complex
        
        A chemical species temporarily formed by the colliding reactant molecules before the final product of the reaction is formed.