CBSE Class 12 · 2006 · All India Compartment; also Foreign 2004, All India 2011 · Chemical KineticsVery Short Answer

Define activation energy of a reaction.

Solution

Activation energy (

E_{a}

) is the minimum extra energy over and above the average energy of the reactants which the molecules must acquire in order to cross the energy barrier (form the activated complex) and change into products:

E_{a} = E_{t h r es h o l d} - E_{a v er a g e}

CBSE Class 12 Board · 2006 · All India Compartment; also Foreign 2004, All India 2011 · Subjective

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