7.2 What is Kc for the following equilibrium when the equilibrium concentration of each substance is: [SO2]= 0.60M, [O2] = 0.82M and [SO3] = 1.90M ?

2SO2(g) + O2(g) 2SO3(g)

 

The equilibrium constant Kc for the given reaction is:
Kc=SO32SO22O2=1.902M20.6020.821M3=12.239 M-1 approximately
Hence, K for the equilibrium is 12.239 M-1.