Chapter 6, Problem 105CP

a.

Interpretation Introduction

Interpretation:The partial pressure of ${\text{PCl}}_{\text{5}}{\text{(g), PCl}}_3{\text{(g), and Cl}}_2\text{(g)}$ needs to be calculated at equilibrium.

Concept Introduction: The relationship between reactants and products of a reaction in equilibrium with respect to some unit is said to be equilibrium expression. It is the expression that gives ratio between products and reactants. The expression is:

  $\text{K = }\frac{\text{concentration of products}}{\text{concentration of reactants}}$

b.

Interpretation Introduction

Interpretation: The mass of ${\text{PCl}}_{\text{5}}$ introduced into the given vessel of 5.00 L to reach to equilibrium position needs to be calculated.

Concept Introduction: The relationship between reactants and products of a reaction in equilibrium with respect to some unit is said to be equilibrium expression. It is the expression that gives ratio between products and reactants. The expression is:

  $\text{K = }\frac{\text{concentration of products}}{\text{concentration of reactants}}$