Chapter 17, Problem 17A.2AE

Interpretation Introduction

Interpretation:

The rate of formation of $\text{NO}$ in the reaction $\text{2NOBr(g)}\stackrel{}{\to }{\text{ 2NO(g) + Br}}_{\text{2}}\text{(g)}$ was reported as $\text{0}{\text{.24 mmoldm}}^{\text{-3}}{\text{s}}^{\text{-1}}$. The rates of formation of ${\text{Br}}_{\text{2}}$ has to be found.

Concept Introduction:

Rate of a reaction:

Rate of a reaction is the change in concentration of reactant or product per unit time.  It is expressed in terms of decrease in concentration of any of the reactants and increase in concentration of any of the products.

Rate of formation $\text{=}$ Rate of consumption

Considering a reaction:

    $\text{2A + B }\stackrel{}{\to }\text{ 3C + D}$

Then,

  $\text{-}\frac{\text{1}}{\text{2}}\frac{\text{d[A]}}{\text{dt}}\text{ = -}\frac{\text{d[B]}}{\text{dt}}\text{ = }\frac{\text{1}}{\text{3}}\frac{\text{d[C]}}{\text{dt}}\text{ = }\frac{\text{d[D]}}{\text{dt}}$