Question

Intr-un vas cu volumul de 0,5 L se introduc 148,5 g amestec echimolecular de clor si monoxid de carbon, care reactioneaza conform ecuatiei reactiei:
Cl₂(g) + CO (g) ⇄ CoCl₂ (g).
Stiind ca dupa stabilirea echilibrului, s-au obtinut 0,5 moli de COCl₂ , calculati valoarea constantei de echilibru Kc.

Answer 1

                                    Cl2                     +               CO          ⇄           COCl2
initial :                     2,3385                                  2,3385
a reactionat :              x                                              x
la echilibru :      (2,3385-x)                                (2,3385-x)                          x
35,5n + 28n = 148,5    63,5n = 148,5    n = 1485/635 = 297/127 moli = 2,3385
la echilibru [ COCl2] = x/V = 1 mol/l   [Cl2] = 3,6771 mol/l = [CO]
Kc = [COCl2]/{[Cl2][CO]} = 1/13,5213 = 0,074 l/mol