Chapter 19, Problem 19.11QP

 (a)

Interpretation Introduction

Interpretation:

The reaction rate expressions for the given reactions have to be written.

Concept introduction:

Rate: The rate is nothing but the change in concentration of substrate (reactant) or target (product) with time.

• The change in concentration term is divided by the respective stoichiometric coefficient.
• The negative sign indicates that substrates (reactants) concentration decrease as per the reaction progress.
• Rate of reaction is always represented by positive quantities.

To write the reaction rate expression for ${\text{H}}_{\text{2(g)}}{\text{+ I}}_{\text{2(g)}}\to {\text{2HI}}_{\text{(g)}}$

(b)

Interpretation Introduction

Interpretation:

The reaction rate expressions for the given reactions have to be written.

Concept introduction:

Rate: The rate is nothing but the change in concentration of substrate (reactant) or target (product) with time.

• The change in concentration term is divided by the respective stoichiometric coefficient.
• The negative sign indicates that substrates (reactants) concentration decrease as per the reaction progress.
• Rate of reaction is always represented by positive quantities.

To write the reaction rate expression for ${\text{5Br}}^{\text{-}}{}_{\text{(aq)}}{\text{+BrO}}_{\text{3}}{{}^{\text{-}}}_{\text{(aq)}}{\text{+6H}}^{\text{+}}{}_{\text{(aq)}}\to {\text{3Br}}_{\text{2}}{}_{\text{(aq)}}{\text{+3H}}_{\text{2}}{\text{O}}_{\text{(l)}}$