SO2 + NO3 ⇄ SO3 + NO
mol/l initial 2/2 2/2 0 0
mol/l transformati -x -x +x +X
mol/l la echilibru 1-x 1-x +x +x
dar x= 1,3/2mol/l
[SO2]=[NO3-]= 0,35mol/l
[SO3]=[NO]= 0,65mol/l
K= [SO3][NO] / [SO2][NO3]= 0,65²/0,35²=.............................CALCULEAZA !!!!