Activation energy is the extra amount of energy that is supplied from outside so that the colliding particles must produce effective collision i.e., have total energy equal to the threshold energy.
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In some cases it is found that a large number of colliding molecules have energy more than threshold value, yet the reaction is slow. Why?
A order of reaction is found to be zero. Will its molecularity be zero?
A spontaneous reaction is not necessarily a fast reaction. Why?
How is half period related to initial concentration for a second order reaction?
