Define " Order of a reaction" and " Activation energy of a reaction " .

Activation energy of the reaction is :

Define activation energy of a reaction.

Define the following : (i) Order of reaction (ii) Activation energy of reaction

Can activation energy for reactions be zero?

An enzyme catalyses a reaction by activation energy of the reaction .

The reactions having low activation energy are……………reactions.

In the presence of an enzyme, the activation energy of a reaction

A colliison between reactant molecules must occur with a certain minimum energy before it is effective in yielding Product molecules. This minimum energy is called activation energy E_(a) Large the value of activation energy, smaller the value of rate constant k . Larger is the value of activation energy, greater is the effect of temperature rise on rate constant k . E_(f) = Activation energy of forward reaction E_(b) = Activation energy of backward reaction Delta H = E_(f) - E_(b) E_(f) = threshold energy The activation eneries for forward and backward reactions in a chemical reaction are 30.5 and 45.4 kJ mol^(-1) respectively. The reaction is