Chapter 12, Problem 16Q

Interpretation Introduction

Interpretation: A general decomposition reaction is given. Several snapshots of the reaction mixture, as the reaction proceeds, have been given. The illustration that best represents an equilibrium reaction mixture is to be determined. The number of molecules of ${\text{A}}_{\text{2}}\text{B}$ that reacted initially are to be calculated.

Concept introduction: The state when the reactants involved in a chemical reaction and the products formed in the reaction exist in concentrations having no further tendency to change is known as an equilibrium state of the reaction.

To determine: The illustration that best represents an equilibrium reaction mixture and the number of molecules of ${\text{A}}_{\text{2}}\text{B}$ that reacted initially.