Chapter 9, Problem 20Q

Interpretation Introduction

Interpretation:

            Dynamic equilibrium has to be described in terms of vapor pressure of liquid.

Concept introduction:

           In reversible reactions, Dynamic equilibrium is a chemical equilibrium at which the rate of forward reaction and the rate of backward reaction become equal to each other.

           Vapor pressure is defined as the pressure exerted by molecules in vapor phase on its condensed phase (the phase from which the vapor came from) during which both the phases are in equilibrium with each other.  Vapor pressure of a liquid depends on the strength of its intermolecular forces. Molecules having weak intermolecular forces exhibit high vapor pressure.