1.

Elemantary unimolecular reactions have first order rate laws, elementary bimolecular reactions have second order rate laws. A rate law is often derived from a proposed mechanism by imposing the state approximation or by assuming that there is a pre -equilibrium. A proposed mechanism must be consistent with the experiment rate law. In a gas phase reaction, a reaction takes place only if the reactant molecules get________________during the molecular collisions

Answer»

threshold energy
activation emergy
both
None of these

Solution :If gaseous reactant MOLECULES have the energy GREATER than (or) EQUAL to activation energy, then the reaction TAKES place.


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