Chapter 13, Problem 13.62AQAP

Consider the reaction: (10.3)

${\text{2SO}}_2\left(g\right)+{\text{O}}_2\left(g\right)\rightleftharpoons {\text{2SO}}_3\left(g\right)$

a Write the equilibrium constant expression

b What is the numerical value of K. for the reaction it the concentrations at equilibrium are $0.\text{1}0{\text{ M SO}}_2$ , $0.{\text{12 M O}}_2$ , and $0.\text{6}0{\text{ M SO}}_{\text{3}}$