Chapter DY, Problem 2PQ

Interpretation Introduction

Interpretation:

For the reaction of chlorine and nitric oxide,

  ${\text{2NO}}_{\text{(g)}}{\text{+Cl}}_{\text{2(g)}}\stackrel{}{\to }{\text{2NOCl}}_{\text{(g)}}$

Doubling the concentration of chlorine doubles the rate of reaction.  Doubling the concentration of both reactants increases the rate of reaction by a factor of eight.  Then the order of the reaction has to be predicted.

Concept Introduction:

Rate of a reaction:

Speed at which the chemical reaction happens is known as rate of a reaction.  Slower the speed of the reaction, lower will be the rate.  Concentration, temperature, pressure, catalyst are the factors affecting rate of a reaction.

Rate law – it is a relationship between reaction rates and reactant concentrations

Order of a reaction:

Order of a reaction is the power of the rate on the concentration of each reactant.  Order of a reaction is an experimentally determined one.