Question

Pentru sistemul in echilibru:

PCl5↔PCl3+Cl5

determinati valoarea constantei de echilibru Kc , stiind ca PCl5 are initial cM=4mol/L ,iar la echilibru are cM=3,446mol/L

Answer 1

                         PCl5                    ⇄               PCl3                +            Cl2
initial :                 4
au reactionat :    x
la echilibru:      (4-x)                                         x                                   x
4-x = 3,446    ⇒ x = 0,554 moli/l
Kc = x² /3,446 = 0,089 mol/l