In: Chemistry
At 700
                              
2SO2(g) + O2(g) 
2SO3(g)
Equilibrium constant for the above reaction is 
     = 0.0152   ----(1)
The reverse of the above chemical reaction is 2SO3(g)
2SO2(g) + O2(g)
The euilibrium constant for this equilibrium reaction is
                                                                             
                                                                            
                   
From (1)
                                                                           
Therefore numerical value of the equilibrium constant for the reverse reaction is 65.8