Activation Energy (Ea) :-
Yes, activation energy is the minimum amount of energy required for a chemical reaction to occur. It is measured in kJ/mol or J/mol or kcal/mol
Our reactants have some specific amount of energy but in order to get converted into products they have to cross an energy barrier.
Arrhenius equation gives the quantitative basis of the relationship between Ea and rate at which reaction proceeds.
k = A e-Ea/(RT)
where, k is reaction rate cofficient
A is pre-exponential factor
R is gas gas constant
T is temperature in Kelvins
It is important to note that the presence of any enzyme or catalyst in a chemical reaction lessens the amount of activation energy required by the reactants and hence, fastens the reaction.
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