___________provides an alternate pathway or reaction mechanism by reducing the activation energy between reactants and products.

Dissociation of hydrogen iodide is an example of ____________reaction.

Concentration dependence of rate is called

The unit of rate constant for a first order reaction is

_____________considers atoms or molecules to be hard spheres and ignores their structural aspects.

__________reactions involve simultaneous collision between three reacting species.

_____________is the expression in which reaction rate is given in terms of molar concentration of reactants with each term raised to some power,which may or may not be same as stochiometric coefficient of the reacting species in a balanced chemical equation.

The overall rate of the reaction is controlled by the slowest step in a reaction called the

The extent to which a reaction will proceed can be determined from

The final heat of the reaction depends up on the nature of _________and